释义
n. 烦躁,磨损,焦急 v. 烦恼,不满,磨损
例句
1. You are fretting yourself needlessly. 你是在不必要地折磨自己。 2. Babies often fret (themselves) when their mothers are not near. 婴儿常常因母亲不在身边而哭闹.