And we can simplify this expression as saying negative e squared over 4 pi, epsilon nought r squared. Epsilon nought is a constant, it's something you might see in physics as well.

也会遇到它,在这里，你可以就把它,理解为一个转换系数,我们需要做的。

麻省理工公开课 - 化学原理课程节选

If I'm expecting mostly numbers in, I can certainly try and do the coercion.

数字输入，我能够肯定的来做强制转换。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you want to do the opposite process, you simply "cast to an int from a char."

如果你想做相反的转换，你就告诉计算机,“把那个char型数据转换成int型处理“

哈佛公开课 - 计算机科学课程节选

I could have done that just doing the coercion.

我能够做那个强制转换。

麻省理工公开课 - 计算机科学及编程导论课程节选

The format is the same. I'm going to ask for some input, and then I am going to use that procedure to check, is this the right type of value. And I'm trying to use that to do the coercion if you like. Same thing if it works, I'm going to skip that, if it not, it's going to throw the exception.

格式是一样的，我需要一些输入,然后我要用一个过程来检查,是否是正确的值,然后你就可以做强制转换了,如果能运行，那是一样的，我打算跳过这段，如果不正确，那就会抛出一个异常。

麻省理工公开课 - 计算机科学及编程导论课程节选

That means starting at the first one, I'm going to do something to it. And what am I'm going to do? I'm going to take that character, convert it back into an integer, and add it into some digits. And I've done a little short hand here, which is I should have said some digits is equal to some digits plus this.

这意味着从第一个字符开始，我要对他们进行一些操作,我要去做什么呢？我要取得这个字符，然后把它转换为整数,然后加到某些数上面去,我在这里用了一些缩写,我本来应该写一个数字等于这个数字。

麻省理工公开课 - 计算机科学及编程导论课程节选