Always provides you with access to the math library because that's useful, too, so you don't always have to remember that.

总是能够让你能够使用数学程序库,那也是有用的，所以你不一定要把它记住。

哈佛公开课 - 计算机科学课程节选

It will be useful and I think it also will show you that you are very smart.

这个句型非常有用，使用它也会让你显得很聪明。

It's like 课堂 - SpeakingMax英语口语达人

But in terms of SI units, which become much more useful if you're actually trying to use intensity in a problem and cancel out your units, we're just talking about joules per second is what intensity is.

但是用国际单位制，这个变得越来越有用了,如果你实际上在使用强度,来解决问题和约化单位，我们仅仅讨论每秒钟的焦耳,这就是强度。

麻省理工公开课 - 化学原理课程节选

Starting to get useful because, in fact with eight bits can you implement things like this?

八个比特开始有用，这是因为使用八个比特你可以实现像这样的东西？

哈佛公开课 - 计算机科学课程节选

And we've only just begun using it, but it has just a bunch GetInt GetString GetDouble of very useful functions like GetInt, GetString, GetDouble, And so as those names imply, you can just cull these functions with no arguments and you'll get back that data type based on its name.

我们刚开始使用了它，里面有很多的,有用的函数，像，所以，那些名字暗示，你可以挑选这些,没有参数的函数，然后你可以通过它的名字,获取他们的数据类型。

哈佛公开课 - 计算机科学课程节选

So, conceptually if you've ever wondered why you get access in all of your functions to global variables that's because they're not down here, they're at the very top of RAM and any function can access that RAM way up there, but for now the interesting player in the story is this thing called the heap.

所以，如果你想知道为什么全局变量能在,所有的函数中使用,那是因为它们不在这下面，而是在内存的顶端,那样任意函数都可以在内存中使用它们，现在，这里面一个有用的角色是,叫做堆的东西。

哈佛公开课 - 计算机科学课程节选