proof

【1】证明

【例】The popularity the new cloth enjoys among the leading importers is proof enough of its value.

这种新布料在各大进口商中受到欢迎，就足以证明其价值很高。

【2】防止的，不能透入的

①可接用against。

【例】This kind of glass is proof against bullets.

这种玻璃能防弹。

②加于名词后形成复合形容词。如water-proof，shock-proof等。

【例】All goods will be packed in wooden cases with shock-proof materials inside.

所有货物用木箱包装，箱内衬以防震的材料。

prop

支柱

【例】The automobile became the main prop of the American economy.

汽车成为美国经济的主要支柱。

proper

【1】适当的

【例】We think it proper to put the case before you.

我们认为应向你方谈及此事。

【2】本身的

置于名词后面。

【例】We would appreciate it if you would try your best to have this attachment shipped together with the machine proper next month.

贵方下月若尽力将此附件与主机一起同时装运，则不胜感激。