You do it through a written contract.

订立个书面合同.

And can do a written contract if required.

和可以做书面合同，如果需要的话。

This collateral contract can be proved by evidence extrinsic to the main written contract.

后一个并行合同可以通过与主书面合同有关的外在证据得以证实.

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.

Do you execute a written contract, agreement or engagement letter for services with every client?

贵所是否与每位客户签订书面合同 、 协议或约定?

Is there a written contract with the transporter that moves containers from the factory to the port?

与将集装箱从工厂运至港口的运输商之间是否签订了书面合同？

Legalistic strategy refers to people tending to avoid future conflict or trying to solve present conflict by written contract or by seeking legal arbitration.

墨守成规战略指人们倾向于避免未知的冲突或采用书面合同、法律仲裁来解决当前的冲突。

AProfessional is a player who has a written contract with a club and is paidmore than the expenses he effectively incurs in return for his footballingactivity.

职业球员是指与俱乐部签订书面合同，且所得酬劳高于其足球活动花费的球员。

He produced a written contract under seal.

他出示一张盖有印信的合约.