合约的英文：
treaty
contract

参考例句：

The contract specifies steel sashes for the windows.
合约指定用钢窗。

Relating to or formed by a treaty or compact between constituent political units.
与政体各组成部分之间的协定或合约有关的或由其组成的.

A pop group that is under contract to one of the big record companies.
与一家大唱片公司签有合约的流行音乐乐队。

Articles of apprenticeship,ie the formal agreement between an apprentice and his employer
师徒合约.

To comply with an agreement
履行合约

The contract was negotiated.
合约已谈妥。

Get the agreement on paper.
将合约以书面印出来。

a contract signed under duress
在威胁下签订的合约

A contract cannot arise out of an illegal act.
违法行为不能构成合约。

This will be retroactive agreement.
这些是追溯以往的合约。

treaty是什么意思：
n. 条约，协议；谈判

They negotiated a treaty.
他们商订了一项条约。

The government denounced the treaty.
政府通知废止该项条约。

They met to finalise the terms of the treaty.
他们会晤确定条约的条款。

The management huddled up a treaty.
厂方仓促拟出一项条约。

Our government acceded to the treaty.
我国政府加入了该条约。

contract是什么意思：
n. 契约；合同；婚约
v. 感染；（使）缩小，缩短，收缩；订契约

The contract was negotiated.
合约已谈妥。

confidentiality of contracts
合同的保密性

Renewal of contract
合同的续订

crimp contraction
皱缩率

a contracted brow
皱缩的眉头