Heaven/God/who/goodness knows!a) used to say that you do not know the answer to a question 天知道!天晓得!谁知道!〔表示不知道问题的答案〕 ‘Where do you think he’s disappeared to this time?’ ‘God knows!’ “你说这回他去哪里了呢?”“天知道!”
Goodness knows why she didn’t go herself. 天知道她为什么不自己去。
b) used to emphasize a statement 天知道,老天作证〔用于强调〕 Goodness knows, I’ve never liked the woman, but I didn’t know how bad it would be to work with her. 老天作证,我从来就不喜欢这女人,可我也不知道和她一起工作会这么糟糕。
→ Heaven/God/who/goodness knows! at know1(SPOKEN SECT)