1、render
致使;造成
It contained so many errors as to render it worthless.
它错误太多,所以毫无用处。
barrel-makers whose trade was rendered obsolete by the introduction of stainless steel wine vats.
不锈钢葡萄酒桶的出现使木制酒桶制造者没了生意
给予(帮助);提供(服务)
He had a chance to render some service to his country.
他有了一个为国服务的机会。
Any assistance you can render him will be appreciated.
无论给予他何种帮助,他都会非常感激。
2、betray
失信于;辜负
When I tell someone I will not betray his confidence I keep my word.
如果我告诉某人我不会辜负他的信任,我就会恪守诺言。
The President betrayed them when he went back on his promise not to raise taxes.
总统背叛了他们,违背了不加税的诺言。
背叛;出卖
They offered me money if I would betray my associates.
他们提出来只要我供出同伙就给我钱。
The group were informers, and they betrayed the plan to the Germans.
这帮人是告密者,他们把计划泄露给了德国人。