The hairdresser's contract states that he must "maintain absolute secrecy about his work and any information he may have gathered both during and after his contract".

该理发师的雇佣合同规定，他必须“在合同存续期间、结束以后都对工作及获得的任何信息绝对保密”。

youdao

In author's view the concept of structure is that the elements in one is not absolute independence, what's more the elements are all in action and contract with each other for the whole thing.

笔者认为，所谓结构是指一个事物内部的各个组成部分不是完全孤立的，而是基于该事物的整体需要处在一种相互的联系和作用之中的状态。

youdao

Moved by a combination of reason and fear, Hobbes believed, human beings will contract with each other to create a sovereign - an absolute ruler who will prevent any slide into anarchy.

BBC: A Point of View: A time when violence is normal