1、render

致使;造成

It contained so many errors as to render it worthless.

它錯誤太多,所以毫無用處。

barrel-makers whose trade was rendered obsolete by the introduction of stainless steel wine vats.

不銹鋼葡萄酒桶的出現使木制酒桶制造者沒了生意

給予(幫助);提供(服務)

He had a chance to render some service to his country.

他有了一個為國服務的機會。

Any assistance you can render him will be appreciated.

無論給予他何種幫助，他都會非常感激。

2、betray

失信于；辜負

When I tell someone I will not betray his confidence I keep my word.

如果我告訴某人我不會辜負他的信任，我就會恪守諾言。

The President betrayed them when he went back on his promise not to raise taxes.

總統背叛了他們，違背了不加稅的諾言。

背叛；出賣

They offered me money if I would betray my associates.

他們提出來只要我供出同伙就給我錢。

The group were informers, and they betrayed the plan to the Germans.

這幫人是告密者，他們把計劃泄露給了德國人。