咬;撕扯;搖晃;拉扯
worry at sth
to bite sth and shake or pull it
Rebecca worried at her lip.麗貝卡咬著嘴唇。
思考,苦想(解決辦法)
to think about a problem a lot and try and find a solution
釋義來自《牛津高階英漢雙解詞典》第 9 版