This means the program statements executed in the loop body must change the value of the expression — or else the loop will never end.

这意味着循环体中执行的程序语句必须要改变表达式的值，否则循环将无法结束。

youdao

Then, this thesis applies IP control algorithm to change controller in outer loop but not in inner loop based on basic double closed loop control system.

然后，本文在传统双闭环控制的基础上，内环的控制算法不变，改变外环控制器的设计算法，主要采用IP控制方案。

youdao

All right. Second question: or maybe a better way of saying this, and the general format you're likely to see here is, a test involving a variable name, which must be initialized outside of the loop, and which interior to the loop gets changed, so that the test is going to change.

好，第二个问题：,换种更好的方式来说吧，你们通常喜欢的,方式是，这个测试涉及到一个变量名字，变量在循环外已经被初始化，然后循环内部会改变这个变量的值，因此测试结果会改变。

麻省理工公开课 - 计算机科学及编程导论课程节选

And remind you that inside of here, I'd better be changing the variable. All right, if that variable that's counting is not changing I'm going to be stuck in an infinite loop, so I ought to that, right, expect somewhere in there, a change of that variable. All right?

我最好改变了计数器的变量值，好，如果计数的变量没有变化的话，我就会被卡在一个无限循环里面,因此我应该【不可闻的声音】,对，在这里的某个地方，改变下计数器的变量，对不对？我要做的最后一件事情就是？

麻省理工公开课 - 计算机科学及编程导论课程节选

So a loop or an infinite loop, because true is always true, there is no-- nothing on the screen that seems to change this keyword true, so this is actually a deliberate infinite loop, but so was that thing up top to forever say hi or whatever it is you wanted to do.

因此而出现死循环，屏幕上的这些语句无论怎么运行,都无法改变它为真的事实，这就是所谓的死循环，无论你想不想要,屏幕上都会不断打印出“hi“

哈佛公开课 - 计算机科学课程节选

Accidentally left out of the name-change loop, Victor's pressing plant attached "Livery Stable Blues" labels to the records instead.

WSJ: Start Spreadin' the Blues | By Marc Myers

That means hiring and involving the right people, communicating the change and installing closed-loop systems and processes to track it closely.

FORBES: Buyer's Recourse: Cashing In On Procurement Savings

This is especially important when unexpected change throws your strategy or your market for a loop.

FORBES: Are We Neglecting Our Middle Managers?