Why? Because that block identifies a set of things that I'm going to do if the test is true.

为什么呢？这是因为这一块指令,指定了一系列的要进行的操作,如果测试为真的话。

麻省理工公开课 - 计算机科学及编程导论课程节选

And if the test is true, it will change the value of this program counter to point to some other place in the memory, some other point in that sequence of instructions, and you'll keep processing.

如果测试结果为真，它会改变程序计数器的结果去,指向记忆存储器里的其他地方，指令序列里的其他地方，然后你会继续这个过程。

麻省理工公开课 - 计算机科学及编程导论课程节选

That was the kind of thing you saw. Asserts said here are some conditions to test. If they're true, I'm going to let the rest of the code run.

这就是你看到的,断言是一些测试条件,如果他们为真。

麻省理工公开课 - 计算机科学及编程导论课程节选

It has a test in it, which is that while, while something is true, do something, but I want to keep doing it.

也有个测试在里面，也就是那个当，当一件事情为真的时候，做一些操作，但是我想一直进行判断。

麻省理工公开课 - 计算机科学及编程导论课程节选

If I come into this code, I'm going to check this branch first, if it's not true, ah, there's a return at the end of that branch. If it is true, I do that, and then I've got a second test. If it's true, return I return, otherwise a return.

但是如果我们看看这里,如果我看这段程序,我会先检查这一部分，如果它是假的，啊，这部分分支结尾有一个。

麻省理工公开课 - 计算机科学及编程导论课程节选

Otherwise the test is always going to be true, we're going to go off here, but this would loop forever if I did that.

否则测试结果就会一直为真，我们需要离开这个测试，否则就会一直执行循环。

麻省理工公开课 - 计算机科学及编程导论课程节选

Do something until an end test is true.

做点儿事情直到最后一个测试也是真的。

麻省理工公开课 - 计算机科学及编程导论课程节选

All right, if this is purely a test of, if this is true do this otherwise I don't care, I don't need the ELSE clause in there to identify it. All right?

好，如果这真是一个测验，用来测试如果是真的那么进行一些操作,否则的话我不在乎，那么我不需要ELSE语句,来进行声明了对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

So if this is true do something else, true otherwise test and see if this is true, do something else, as many as I like followed by the end.

因此如果结果为true那么做一些操作，否则的话再看看这个表达式的值是不是，如果是的话做另外一些操作，我想要多少后面就可以跟多少。

麻省理工公开课 - 计算机科学及编程导论课程节选

Once again, say, is that test true?

再一次的去看看测试结果不是为true？

麻省理工公开课 - 计算机科学及编程导论课程节选

So what's going to happen here? If I'm inside this FOR, OK, and I'm running around, if I ever hit a place where this test is true, I'm going to execute that return, return that return returns from the entire procedure. OK? So the return comes back from the procedure.

那么这里发生了什么呢？,如果我是在这个for循环里面，我正在运行，如果我运行到test的值为真的地方，我就会执行,这个return将会返回整个程序的值,明白了吗？所以它将会从整个程序中返回值。

麻省理工公开课 - 计算机科学及编程导论课程节选