One story says it got that meaning from the custom of throwing boiling water down on enemies attacking a castle.

VOA: special.2009.05.10

The sense of going back and forth, no one of us on top, not correspondent in a vertical way, how things going down there.

这种来来回回的感觉，没有人是在高处，也没人在低处。

普林斯顿公开课 - 人性课程节选

Well no, hang on a second. Just slow down a second, that's a good one.

问得很好,我们一会再来回答

耶鲁公开课 - 博弈论课程节选

No one gets off the hook on this one -- from governments to schools, corporations to nonprofits, all the way down to families sitting around their dinner table."

VOA: special.2010.06.07

The only thing that's different is that they're one down on the periodic table, potassium is down one row, so it's going to be a little bigger, but when we're thinking about size, it maybe does not seem that significant to talk about the size.

它们唯一的不同点,就在于其中一个在周期表的下面，钾在下一行，因此它要稍微大一些，但是当我们考虑尺寸的时候，似乎讨论尺寸的意义不大。

麻省理工公开课 - 化学原理课程节选

"We will have one opportunity on the 17th , and then stand down and allow them to play through.

VOA: standard.2009.06.16

And I will even write down which one you should lie on.

我写下哪个问题你应该撒谎。

耶鲁公开课 - 心理学导论课程节选

One man wanted to know if California could get its hands on money from the president's stimulus package turned down by other states.

VOA: standard.2009.03.19

This is a game where you get a little plastic device, it's got 15 plastic numbers on it and one hole in this little plastic board and you can move those numbers up, down, left to right, and the goal is to take what's a random assortment of tiles and arrange them in numeric order and that's one of these little things you can play sort of absentmindedly.

在这个游戏中，你会拿到一个可塑的装置，上面有15个数字和一个孔,你可以将数字上下移动，左右移动，目标就是,拿到一个随机的组合后,将其按数字顺序排列,这个你可以随便玩玩。

哈佛公开课 - 计算机科学课程节选

"Just kind of uh, just stepped off the cliff and said 'okay where's that microphone.' Made a short couple of comments and then put the mic down and dropped down on one knee and.

VOA: standard.2010.02.27

If banks get in trouble and they can't pay out -if one bank gets in trouble and can't pay out on its deposits, then that can bring the whole system down because it can cause a panic among investors -among depositors and banks -and create a run on a bank.

如果银行出现问题而且他们无法支付...,如果一家银行出现问题,并且无法支付提取的存款,那么这就会使得整个系统崩溃,因为这会在投资者中引起恐慌...,在存款人和银行中引起恐慌,并且造成银行挤兑

耶鲁公开课 - 金融市场课程节选

People can get hung up on sort of hunting these things down, and stamping them out, one at a time. And it's a little bit like playing Whack-a-Mole. Right?

我们可能会一次一个的去发现,这个bug并且消灭它，这有点像打鼹鼠对不对？,不停的有鼹鼠跳起来？

麻省理工公开课 - 计算机科学及编程导论课程节选

We learn nothing from examining what is going on down here in n equals one shell.

必须仔细检查不然我们学不到什么的,这里n=1的壳。

麻省理工公开课 - 固态化学导论课程节选

with someone else who's standing next to you, you're going to sum your numbers together and one of you whoever is fastest probably is going to sit down and the other person is going to take on his or her number, the summation of those numbers; and then you're going to repeat and if you follow the logic here in just a few moments, there should be just one of you very awkwardly standing.

你们需要与站在你下面一个的你结成一对,把你们的数字相加,你们中最快的那个可以坐下,其他人将接着他的那个号码继续进行，计算这些数字的和，以此重复,如果你们遵循了这一逻辑，最后将只有一个人呆呆地站着。

哈佛公开课 - 计算机科学课程节选

So this is a little bit trickier to look at and see what it means, but essentially we have two hybrid orbitals, which are shown in blue here, and then we have one p orbital that's left alone that's going up and down on the page.

看这个图肯能会觉得比较诡异，但本质上，骂我们有两个杂化轨道，这里用蓝色表示，还有剩下一个p轨道,在图中上下方向上。

麻省理工公开课 - 化学原理课程节选