Should Mexico attack, Taylor and his men were to strike back as hard as possible.

VOA: special.2009.02.19

And if we do, in fact, hit it with light to get the electrons off, it will go back to the straight up in position, or if it gets knocked hard enough it does that, too.

而且如果我们这么做，事实上，用光轰击它以逐出电子，它就会在原位置沿直线返回，或者如果它被撞击的足够猛烈,也会出现上述现象。

麻省理工公开课 - 化学原理课程节选

If somewhere later on in the code it shifts to string, I might not be manipulating that and getting actual values out, but not what I wanted, and it's going to be really hard for me to chase it back.

然后后面的一些代码,把变量类型变为了字符串，我可能不会通过实际操作,去取得实际的变量的类型，但是这并不是我想要的类型,而且对我来说把类型，变回去也很困难。

麻省理工公开课 - 计算机科学及编程导论课程节选

But he is hard at work. He and his team currently are trying to make algae that can change carbon dioxide back into fossil fuel.

VOA: special.2010.07.20

Because it's hard when you go back being part of any group. Once you are in that group, and away from other people, it's very hard to remember We've talked that -Oh, have you?

因为如果你回到原来的群体中,就会变得难了，因为你只要一呆在那个群体中，远离其他人，就很难,我们聊过这个，-是吗？

普林斯顿公开课 - 人性课程节选

"I came back from that really shaken up. I started to think about how the oceans are having a hard time.

VOA: standard.2010.08.04

In fact, if the other person is working hard, or is cutting back on their carbon emissions, you have every bit more incentive to not work hard or to keep high carbon emissions yourself.

实际上,如果其他人正在努力工作,或者正在尽量减少碳排量,你总会有想偷懒的动机,或者总是继续大量排碳

耶鲁公开课 - 博弈论课程节选

Life seems to be back to normal. However,in the small coastal communities hit hard by the tsunami, signs of devastation and loss are everywhere.

VOA: standard.2009.10.05

if you really have some trouble with DVD then Ok, put it in and if I'm not back start it anyhow and I'll try very hard to be here in the meantime,could you make out the card

如果有什么问题的话,如果我没及时赶过来的话，下次把它先放一下,无论如何把它放了，我下次也尽量赶过来,啊，你看一下这个卡

麻省理工公开课 - 电影哲学课程节选

Panico says in most of the hard hit communities, life is largely back to normal.

VOA: standard.2009.12.26

And tracing back where it came from can be really hard.

然后去查找问题来源,可能会很困难。

麻省理工公开课 - 计算机科学及编程导论课程节选