释义
n. 喃喃低语 v. 喃喃自语,作低沉声,出怨言
例句
1. Actors often mutter to themselves when rehearsing their lines. 演员背台词的时候经常自己嘀嘀咕咕。 2. She kept on muttering to herself. 她老是一个人嘀嘀咕咕。