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. (pronoun) this; these
2. (bound form) this; the (followed by a noun)
3. (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)

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”)