So, and of course, you know, keeping entropy as a fixed variable for a system like that is extremely cumbersome.

所以，对这样的系统要求它们的熵保持恒定,和一个非常笨拙做法。

麻省理工公开课 - 热力学与动力学课程节选

There have been fundamental changes through time that make the role of the central bank evolve and change through time.

试图保持系统的稳定,随着时间的发展，基本的改变发生,使得中央银行的角色演变。

耶鲁公开课 - 金融市场课程节选

To be systematic, I'm going to build this tree depth-first left-first.

为了保持系统性，我将要把这棵树设置,为深度优先和左边优先。

麻省理工公开课 - 计算机科学及编程导论课程节选

Our immune system's function is to keep us healthy in the face of an environment where there are lots of things that could potentially harm us.

我们免疫系统的功能就是保持自身健康,在面对危机四伏的环境时,使我们免受伤害

耶鲁公开课 - 生物医学工程探索课程节选

The gold standard was a success in the sense that the price of gold stayed constant because that's what the whole system was designed to do.

金本位制度是一个成功,因为金子的价值保持不变，并且这也是,人们当初对这设计整个系统的意图所在。

耶鲁公开课 - 金融市场课程节选

It also turns out that they're made stable in these environments like milk and mucus secretions because of this secretory chain which is wrapped around it.

同时,连接抗体还可以,使抗体在像乳汁或是粘液分泌物,这样的体内环境中保持稳定,因为分泌循环系统可以将抗体包裹在内

耶鲁公开课 - 生物医学工程探索课程节选