基本解释基质间片同根派生 英汉例句Don't fret, we'll get there on time.别着急,我们能准时到那里。Fretting about it won't help.发愁於事无补。Babies often fret (themselves) when their mothers are not near.婴儿常常因母亲不在身边而哭闹。You are fretting yourself needlessly.你是在不必要地折磨自己。