leave a nasty (or bad) taste in one's mouth 留下一个坏印象；引起反感 The whole experience left a bad taste in my mouth. 整个经历给我留下了一个非常不好的印象。 When you see someone being treated so unkindly, it leaves a bad taste in your mouth. 当你看到某些人被很恶劣地对待时