角色类型可根据不同系统的需求而变化。

Role types can vary according to the requirements for different systems.

youdao

服务请求提供了不同系统工件联系的评价方法。

Services Requested provide a measure of the interconnection of different system components.

youdao

我们可以它们看做不同系统间相互联系的桥梁。

We can generalize it as a bridge between the different systems that can get connected through it.

youdao

No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.

历史上有过不同的习惯，这里我们规定,如果环境对系统做功。

麻省理工公开课 - 热力学与动力学课程节选

It varies in its structure among cells of the nervous system but all synapses have some properties in common.

突触结构因神经系统细胞不同而不同,但突触都有某些共同属性

耶鲁公开课 - 生物医学工程探索课程节选

It has the function, in other words, of negating its own meaning in another semiotic system, in this case the semiotic system of the stoplight.

也就是说，他有这样那样的功能，在不同语义系统中表示的甚至完全相反，就像红灯表示的这些不同含义一样。

耶鲁公开课 - 文学理论导论课程节选