清楚

1. clear; distinct

♦ 字迹~ written in a clear hand

♦ 发音~ a clear pronunciation

♦ 头脑~ a clear head

♦ 他的话说得不~。 He didn't speak clearly. or What he said was ambiguous.

2. be clear about; understand

♦ 这个问题你~不~？ Do you understand this question or not?

♦ 我真不~他为什么这样做。 I really can't understand why he has done this.