1. if
2. in case
3. in the event that

1. I
2. me
3. my

1. not clear
2. unknown
3. to fail to understand

1. white
2. snowy
3. pure
4. bright
5. empty
6. blank
7. plain
8. clear
9. to make clear
10. in vain
11. gratuitous
12. free of charge
13. reactionary
14. anti-communist
15. funeral
16. to stare coldly
17. to write wrong character
18. to state
19. to explain
20. vernacular
21. spoken lines in opera

1. a; an; one
2. the whole (afternoon, summer vacation etc)

1. Combination of the numeral 一 (“one”) and the generic classifier 個／个: a; an; one
2. same

classifier: 個

1. I
2. me
3. my

1. cannot
2. must not
3. should not

1. to translate
2. to interpret
3. translator
4. interpreter
5. translation
6. interpretation

classifiers: 個, 位, 名