swear to
phrasal verbswear to something
- (informal) to say that something is definitely true
一口咬定 - I think I put the keys back in the drawer, but I couldn't swear to it (= I'm not completely sure).
我想我把钥匙放回抽屉里了,不过我不敢肯定。
- I think I put the keys back in the drawer, but I couldn't swear to it (= I'm not completely sure).