whence

详细解释:ad. 从何处, 出于什么原因, 从哪个
n. 来处, 根源
相关词组:
Whence comes it that...?

例句：

Since all the maid were good and livable from whence come the evil wives?既然娘儿们都美好而可爱，雌老虎又从何而来？