1. exhausting
2. hard
3. tough
4. arduous
5. to work hard
6. to go to a lot of trouble
7. hardship(s)

1. -ly
2. structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

1. earth
2. ground
3. field
4. place
5. land

classifier: 片

1. to work
2. (of a machine) to operate
3. job
4. work
5. task

classifiers: 個, 份, 項

1. several
2. quite a few

1. (classifier used before a noun that has no specific classifier)
2. (bound form) individual

1. moon
2. month
3. monthly

classifiers: 個, 輪

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 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
4. to understand clearly (variant of 瞭 liǎo)

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

1. only natural
2. as it should be
3. certainly
4. of course
5. without doubt

1. can
2. may
3. possible
4. able to
5. not bad
6. pretty good