ample adequate abundant怎么区分?

adequate 表示在数量或质量上足以满足特定的标准,强调刚好够用,没有多余.e.g.He doesn't earn a large salary but it is adequate for his needs.他挣钱不多,但也够用了.abundant 含义为quite enough,“充裕,绰绰有余”,指数量非常多或充足有余.e.g.We save abundant proof of his guilt.我们有他犯罪的充分证据.ample “足够,充分”,指满足了需要还有多余,常用于指抽象的东西或空间.e.g.He is a man of ample means（财产,资力）.他是个家境殷实的人.