brain

tamnd's digital brain — notes, problems, research

43815 notes

运动 (yùndòng) — exercise / sport / movement

HSK 3 | noun / verb | physical exercise, a sport, or a large-scale movement

hsk-3vocabularya2
问题 (wèntí) — question / problem

HSK 3 | noun | a question that needs an answer, or a problem that needs a solution

hsk-3vocabularya2
演绎 (yǎnyì) — to deduce; to perform, to adapt

HSK 6 | verb | to deduce logically; to perform or present artistically

hsk-6vocabularyc1
包括 (bāokuò) — to include

HSK 3 | verb | to include, to comprise

hsk-3vocabularya2
突出 (tūchū) — prominent; outstanding; to stick out

HSK 4 | adjective / verb | noticeably prominent or to protrude beyond others

hsk-4vocabularyb1
以后 (yǐhòu) — after / in the future / from now on

HSK 3 | noun / adverb | time reference word for events after a stated point

hsk-3vocabularya2
抗体 (kàngtǐ) — antibody

HSK 5 | noun | antibody; protein produced by the immune system to fight pathogens

hsk-5vocabularyb2
理解 (lǐjiě) — to understand; to comprehend; understanding

HSK 3 | verb/noun | to grasp the meaning or reasoning of something

hsk-3vocabularya2
您好 (nín hǎo) — hello (formal/respectful)

HSK 1 | greeting phrase | formal or respectful greeting for elders and superiors

hsk-1vocabularya1
女 — JLPT N5 Kanji

女 (jo/nyo/nyou/onna): woman. JLPT N5 kanji.

japanesekanjin5jlpt
数据 (shùjù) — data

HSK 5 | noun | factual information, especially numerical, collected for analysis

hsk-5vocabularyb2
接受 (jiēshòu) — to accept; to receive; to take

HSK 4 | verb | to willingly take or agree to something offered

hsk-4vocabularyb1
懒惰 (lǎnduò) — lazy

HSK 4 | adjective | lazy; indolent

hsk-4vocabularyb1
企业 (qǐyè) — enterprise; company; firm

HSK 4 | noun | a business organization engaged in commercial activity

hsk-4vocabularyb1
视角 (shìjiǎo) — perspective, point of view

HSK 5 | n | the angle or standpoint from which something is seen or narrated

hsk-5vocabularyb2
鸡蛋 (jīdàn) — egg

HSK 1 | noun | chicken egg, egg

hsk-1vocabularya1
转变 (zhuǎnbiàn) — to transform; to change; transition

HSK 4 | verb/noun | a significant change or transformation

hsk-4vocabularyb1
触动 (chùdòng) — to touch; to move emotionally

HSK 5 | verb | to stir emotionally; to touch on a sensitive point

hsk-5vocabularyb2
啊 (a) — sentence-final particle

HSK 2 | particle | expressive sentence-final particle with four tonal variants

hsk-2vocabularya1
〜だけでなく — JLPT N2 Grammar

Learn how to use 〜だけでなく (dake de naku) to express 'not only ~ but also' in a neutral, versatile way. Includes structure, nuance, examples, and comparisons.

japanesegrammarn2jlpt
小 — JLPT N5 Kanji

小 (shou/chii-sai): small. JLPT N5 kanji.

japanesekanjin5jlpt
关系 (guānxi) — relationship; connection; to matter

HSK 4 | noun / verb | ties between people or things, or relevance

hsk-4vocabularyb1
一点儿 (yīdiǎnr) — a little; a bit

HSK 1 | adverb / noun phrase | indicates a small amount or degree

hsk-1vocabularya1
Family & Relationships

Esperanto vocabulary for family members, relationships, life stages, and social bonds.

esperantovocabularyfamilyrelationships
参与 (cānyù) — to participate in; participation

HSK 4 | verb/noun | to take part in an activity or event; active involvement

hsk-4vocabularyb1
Lesson 14: Education System

Discuss the Chinese education system using 通过 + means + V and 依靠, with vocabulary covering 高考, 大学, and graduate study.

hsk-4lessonb1
自行车 (zìxíngchē) — bicycle

HSK 3 | noun | bicycle, bike

hsk-3vocabularya2
气候 (qìhòu) — climate

HSK 3 | noun | climate — long-term weather patterns of a region

hsk-3vocabularya2
再者 (zàizhě) — furthermore, moreover

HSK 5 | conjunction | used to introduce an additional point in a series of arguments

hsk-5vocabularyb2
分析 (fēnxī) — to analyze; analysis

HSK 4 | verb/noun | to break down a subject into its components in order to understand it

hsk-4vocabularyb1
治理 (zhìlǐ) — Govern, governance, manage

HSK 5 | verb/noun | to govern or manage; systematic control and management

hsk-5vocabularyb2
证实 (zhèngshí) — to confirm; to verify

HSK 5 | verb | to confirm as true; to substantiate

hsk-5vocabularyb2
知识 (zhīshi) — knowledge

HSK 3 | noun | knowledge; information learned through study or experience

hsk-3vocabularya2
道 — Kanji Reference

道 (road, way): 12 strokes, JLPT N5. On: ドウ、トウ. Kun: みち.

japanesekanjin5writing
安 — JLPT N5 Kanji

安 (an/yasu-i): cheap. JLPT N5 kanji.

japanesekanjin5jlpt
送る (おくる) — Japanese Vocabulary

送る (おくる / okuru): to send. N4 level Japanese vocabulary.

japanesevocabularyn4verb-u
探讨 (tàntǎo) — to explore, to probe into

HSK 6 | verb | to explore and discuss a topic in depth; to investigate

hsk-6vocabularyc1
方向 (fāngxiàng) — direction

HSK 3 | noun | the way something is facing or moving

hsk-3vocabularya2
负责任的 (fùzérèn de) — accountable, responsible

HSK 5 | adjective | bearing responsibility; accountable for one's actions

hsk-5vocabularyb2
千 — Kanji Reference

千 (thousand): 3 strokes, JLPT N5. On: セン. Kun: ち.

japanesekanjin5writing
更加 (gèngjiā) — even more; still more; all the more

HSK 3 | adverb | indicates an increase in degree beyond a previously established level

hsk-3vocabularya2
标准 (biāozhǔn) — standard / criterion

HSK 3 | noun / adjective | standard, criterion, norm; standardized

hsk-3vocabularya2
议题 (yìtí) — agenda item; issue for discussion

HSK 5 | noun | a topic on an agenda; an issue to be discussed or debated

hsk-5vocabularyb2
表面 (biǎomiàn) — surface; appearance

HSK 5 | noun | the outer surface or outward appearance of something

hsk-5vocabularyb2
Body & Health

Esperanto vocabulary for body parts, health, illness, medical situations, and physical descriptions.

esperantovocabularybodyhealthmedical
流行 (liúxíng) — popular; fashionable; in vogue

HSK 3 | adjective/verb | widely spread or currently trendy

hsk-3vocabularya2
固然 (gùrán) — of course, admittedly

HSK 6 | adv | used to concede something as true before introducing a contrasting or qualifying point

hsk-6vocabularyc1
进化 (jìnhuà) — evolution; to evolve

HSK 5 | noun/verb | biological or metaphorical development to a higher form

hsk-5vocabularyb2
〜限りだ (nothing but — strong emotion expression)

N1 grammar pattern 〜限りだ: expressing a strong, overwhelming emotion — 'I feel nothing but X / I am completely filled with X.' Used for both positive and negative strong feelings.

japanesen1grammarjlpt限りだemotion
英 — Kanji Reference

英 (English, heroic): 8 strokes, JLPT N5. On: エイ. Kun: none.

japanesekanjin5writing
采访 (cǎifǎng) — to interview; interview (journalism)

HSK 5 | verb/noun | a journalist's act of gathering information through interviewing

hsk-5vocabularyb2
材料 (cáiliào) — material; data

HSK 3 | noun | physical material or written data and information

hsk-3vocabularya2
Lesson 24: Complex Sentence Structure

Sindarin complex sentences: subordinate clauses, relative clauses with i, embedded questions, temporal clauses, and attested examples from Tolkien's texts.

sindaringrammarsentencesadvanced
CF 466A - Cheap Travel

Ann needs to commute using the subway a total of n times. She can pay for each ride individually at a cost of a rubles, or she can buy a special multi-ride ticket that covers exactly m rides and costs b rubles.

codeforcescompetitive-programmingimplementation
严格 (yángé) — strict; rigorous; stern

HSK 4 | adjective | demanding exact compliance with rules or standards

hsk-4vocabularyb1
批判 (pīpàn) — to criticize; to critique; criticism

HSK 5 | verb/noun | to criticize systematically; critique; critical analysis

hsk-5vocabularyb2
搜索引擎 (sōusuǒ yǐnqíng) — search engine

HSK 4 | noun | a web service that searches and indexes internet content

hsk-4vocabularyb1
适合 (shìhé) — to suit; suitable; appropriate

HSK 3 | verb / adjective | to be suited to; to fit well with a person, purpose, or situation

hsk-3vocabularya2
隐含 (yǐnhán) — to imply; implicit; to contain hidden meaning

HSK 5 | verb/adjective | to contain something hidden within; not explicitly stated

hsk-5vocabularyb2
取 (qǔ) — to take / to fetch

HSK 3 | verb | to take, to fetch, to retrieve, to obtain

hsk-3vocabularya2
Lesson 2: Directions & Navigation

Learn to give and follow directions in Chinese using left, right, straight, and the 从...到... structure.

hsk-2lessona1
人口 (rénkǒu) — population

HSK 3 | noun | the number of people in a place

hsk-3vocabularya2
Lesson 9: Shopping and Money

Learn how to buy things, ask prices, and use numbers in shopping situations.

esperantoa1lesson
Education Vocabulary — Japanese N1

Essential Japanese vocabulary for school, university, studying, clubs, exams. N1 level reference with readings, romaji, and examples.

japanesevocabularyn1education
航空航天 (hángkōng hángtiān) — aerospace

HSK 8 | noun | aerospace; the combined fields of aviation and space exploration

hsk-8vocabularyc2
确实 (quèshí) — indeed; really; truly; genuinely

HSK 3 | adverb | confirms or affirms a fact as genuine and undeniable

hsk-3vocabularya2
安静 (ānjìng) — quiet; peaceful

HSK 3 | adjective | calm and free from noise

hsk-3vocabularya2
突然 (tūrán) — suddenly; all of a sudden

HSK 3 | adverb/adjective | happening without warning

hsk-3vocabularya2
到 (dào) — to arrive; to (a destination)

HSK 1 | verb / complement marker | indicates arriving at a destination or successful completion of an action

hsk-1vocabularya1
Lesson 21: Advanced Grammar — Formal Patterns

Classical-influenced formal patterns in modern Chinese — 以...之名, 为所欲为, 无论如何, and the grammar of extreme and universal quantification

hsk-6lessonc1
强化 (qiánghuà) — to strengthen, to reinforce

HSK 5 | verb | deliberate increase in strength, intensity, or effectiveness

hsk-5vocabularyb2
右 — JLPT N5 Kanji

右 (u/yuu/migi): right. JLPT N5 kanji.

japanesekanjin5jlpt
同意 (tóngyì) — to agree, to consent

HSK 2 | verb | to agree with, to consent to, to approve

hsk-2vocabularya1
勤奋 (qínfèn) — Diligent

HSK 4 | adjective | diligent, hardworking

hsk-4vocabularyb1
数据库 (shùjùkù) — database

HSK 4 | noun | an organized collection of structured data

hsk-4vocabularyb1
进步 (jìnbù) — to make progress; progress; improvement

HSK 3 | verb/noun | to advance; to improve; forward movement

hsk-3vocabularya2
〜そうだ (appearance) — Japanese Grammar

〜そうだ (appearance): JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.

japanesegrammarn4appearance
百 — Kanji Reference

百 (hundred): 6 strokes, JLPT N5. On: ヒャク. Kun: none.

japanesekanjin5writing
CF 461E - Appleman and a Game

Appleman starts with an empty string. In one second he may append any substring of t to the end of the string he is building. For a fixed target string s, Appleman chooses an optimal sequence of substrings and finishes s in the minimum possible number of seconds.

codeforcescompetitive-programmingbinary-searchshortest-pathsstrings
变化 (biànhuà) — Change

HSK 4 | noun/verb | change, transformation

hsk-4vocabularyb1
名字 (míngzi) — name

HSK 1 | noun | name, given name

hsk-1vocabularya1
收益 (shōuyì) — revenue, profit, returns

HSK 5 | noun | financial returns or gains from an activity or investment

hsk-5vocabularyb2
竞争对手 (jìngzhēng duìshǒu) — competitor; rival

HSK 4 | noun | a competitor or rival in business, sports, or other fields

hsk-4vocabularyb1
Lesson 12: The Relative Pronoun (quī, quae, quod)

Full paradigm of the relative pronoun, rules for agreement and case, worked examples, the connecting relative, and contrast with the interrogative adjective.

latinnovicelesson
总结 (zǒngjié) — to summarize; summary

HSK 4 | verb/noun | to draw together key points into a conclusion

hsk-4vocabularyb1
看 (kàn) — to look at; to watch; to read

HSK 1 | verb | seeing or viewing in multiple senses

hsk-1vocabularya1
劣势 (lièshì) — Disadvantage

HSK 4 | noun | disadvantage, inferior position

hsk-4vocabularyb1
舒服 (shūfu) — comfortable; at ease

HSK 2 | adjective | describes physical or emotional comfort and well-being

hsk-2vocabularya1
Lesson 10: Weather Deep Dive

Describe changing weather, understand forecasts, and use 越来越 to express gradual change in Chinese.

hsk-2lessona1
生 — JLPT N5 Kanji

生 (sei/shou/i-kiru): life. JLPT N5 kanji.

japanesekanjin5jlpt
演讲 (yǎnjiǎng) — speech; to give a speech

HSK 4 | noun / verb | a formal speech or lecture; to deliver a speech

hsk-4vocabularyb1
社会影响 (shèhuì yǐngxiǎng) — social influence

HSK 5 | noun | the effect that other people or society have on individual behavior and attitudes

hsk-5vocabularyb2
也 (yě) — also, too

HSK 1 | adverb | also, too — adds the same information about the subject

hsk-1vocabularya1
後 — JLPT N5 Kanji

後 (go/kou/ato): behind. JLPT N5 kanji.

japanesekanjin5jlpt
坚持 (jiānchí) — to insist; to persist; to stick to

HSK 4 | verb | to maintain a position or action despite difficulty

hsk-4vocabularyb1
JLPT N3 Lesson 4: Complex Conjunctions II — Change and Proportion

Master five N3 patterns that express change, proportion, and conditionality: 〜によって (depending on), 〜に従って (in accordance with), 〜につれて (proportional change), 〜とともに (together with/as), and 〜に応じて (in response to).

japanesen3lessonjlptgrammarchangeproportion
利用 (lìyòng) — to use; to make use of; to utilize

HSK 4 | verb | to take advantage of something for a purpose

hsk-4vocabularyb1
Lesson 3: 不但...而且 Patterns

Express additive and cumulative relationships using 不但...而且, 既...又, and 不仅...还 at B1 level.

hsk-4lessonb1
叫 (jiào) — to be called; to call out; to ask

HSK 1 | verb | used to give one's name, to shout, or to ask someone to do something

hsk-1vocabularya1
〜のみか (not only... but also — literary escalation)

N1 grammar pattern 〜のみか: literary 'not only X but also Y,' escalating from X to the more surprising/larger Y. Formal and literary register.

japanesen1grammarjlptのみかliterary Japanese