If the written contract specifies it, those conditions must be complied with.

如果书面合同有了明确规定，那就必须遵守那些条款。

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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

How many of you have a written contract, stuck with a magnet on the fridge, telling you when you're supposed to tidy up.

有人写过协议吗,在冰箱上贴个磁力贴,规定好什么时候该谁打扫房间

耶鲁公开课 - 博弈论课程节选

That's what's written underneath it on the contract.

那就是合同下的伏笔。

耶鲁公开课 - 1945年后的美国小说课程节选

When it comes to the internet, there is no written contract, but the rules are the same.

FORBES: I've Seen Your Future and It's Been Edited

The condition to peg off-peak fares at RPI -1, or 1% below the retail price index measure of inflation, will be written into the contract for the next rail franchise.

BBC: Below-inflation Scottish off-peak rail fare pledge

"We basically had a handshake deal, and then in the two weeks while the contract was being written up the defender syndicate broke away, " fumes Roger Williams, president of OLN.

FORBES: Magazine Article