1. to have to
2. must
3. compulsory
4. necessarily

1. to adopt or carry out (measures, policies, course of action)
2. to take

1. operation
2. action
3. to move about
4. mobile

classifier: 個

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