I conjure you not to betray me.

我恳求你不要背我。

You HAs no grounds to agoing away of the contract.

你们么有正当理由背合同。

These commitments have already been breached.

这些承诺已遭背。

He was forsaken by his friends.

他被朋友们背了。

Is that you, Dave? Oh, my gosh! The backstabber who left us to work for the evil WebTracker!

是你吗，戴夫？天啊！背我们去帮万恶的“网路搜寻家”做事的阴险小人！

He renounced his religion.

他宣布背原来的信仰。