在签正式合同之前，我们先草签了一份口头协议。

We hurried an oral agreement before signing a formal contract.

youdao

我与一家公司达成了一个口头协议。

I made an oral agreement with a company.

youdao

然后我一条一条地读了他们的书面合同，确信没有从口头协议中漏掉什么。

I read their written contracts, clause by clause; to be sure nothing had been omitted from the oral agreement.

youdao

Suppose they have a written contract, or even an unwritten contract, what enforces the contract for colluding firms or crooks in jail?

假如他们签了一份书面协议,或干脆口头的,他们怎么强制履行呢

耶鲁公开课 - 博弈论课程节选

A contract is more then communication, a contract is communication with teeth. It actually changes the payoffs.

协议的效力大于口头约定,协议是有违约责任的,它影响收益

耶鲁公开课 - 博弈论课程节选

So basically, we're stuck with this verbal agreement and we both have an incentive to cheat and produce more whatever it is, sugar water.

但不管怎样,在这个口头协议不起作用,我们都有违约,生产更多这种糖水的动机

耶鲁公开课 - 博弈论课程节选