●ˈchew on sth1. ( ˈchew at sth) to bite sth continuously, especially because you are nervous or to test your teeth(因紧张等)不断地咬,不停地啃◆He chewed on his bottom lip as he considered the question. 他一边思索问题,一边时不时咬咬嘴唇。2.➡chew sth over◆Why don’t we chew on it for a while? 我们为什么不仔细考虑一段时间呢?[v + prep]