1. science
2. scientific knowledge
3. scientific
4. rational

classifiers: 門, 個, 種

1. to break through
2. to make a breakthrough
3. to surmount (an obstacle)
4. (sports) to break through the opponent's defense

1. only; merely; nothing but; no more than
2. it's just that ...

1. to be (followed by substantives only)
2. correct; right; true
3. (respectful acknowledgement of a command) very well
4. (adverb for emphatic assertion)

1. to notice; to become aware of
2. to discover; to find; to detect
3. a discovery

1. (completed action marker)
2. (modal particle indicating change of state, situation now)
3. (modal particle intensifying preceding clause)

1. to finish
2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
3. (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
4. to understand clearly (variant of 了 liǎo)

1. (of eyes) bright
2. clear-sighted
3. to understand clearly

1. clearly and easy to see (idiom); obviously
2. clearly
3. it goes without saying

1. of; ~'s (possessive particle)
2. (used after an attribute when it modifies a noun)
3. (used at the end of a declarative sentence for emphasis)
4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
5. also pr. dì or di in poetry and songs

1. matter
2. thing
3. item
4. work
5. affair

classifiers: 件, 樁, 回

1. alternative form of 倳 (zì, “to establish”)
2. alternative form of 剚 (zì, “to stab”)