该调度类类似于一个模块链，协助内核调度程序工作。

The scheduling classes are like a chain of modules assisting the core scheduler.

youdao

要确保对链中所有类的正确初始化，实现者必须手动编写超类方法调用的代码，如清单 11 所示。

To guarantee the correct initialization for all the classes in the chain, the implementer must manually code the superclass method invocation as shown in Listing 11.

youdao

这是一个跨越了几千年人类历史的知识链，令人不可思议却又激动人心。

That's an incredible chain of knowledge, spanning centuries of human existence. It's breathtaking all by itself.

youdao

There's lipid chains in between so cell membranes are lipid rich layers that can exist in water.

脂质链在两者中间,所以细胞膜是富含脂类的膜层,并可以稳定存在于水中

耶鲁公开课 - 生物医学工程探索课程节选

But you'd like to write your program not in terms of floats and ints and lists, but in terms of mortgages, and CDOs, and all of the objects that you read about in the paper, the types you read about.

但是你可以不基于,浮点型，整型还有链表来进行编程，而是基于一些房贷类，债务抵押债券类来编程,甚至那些你在报纸上看到的类。

麻省理工公开课 - 计算机科学及编程导论课程节选