The National Osteoporosis Foundation says a test called Dual-energy X-ray absorptiometry,or DXA, is the best test for osteoporosis.

VOA: special.2010.08.31

Some others If I might have a right to X, do you have a duty to fulfill that for me?

其他的像如果我有某项权利，你有没有义务帮我实现？

普林斯顿公开课 - 人性课程节选

So I simply print, highlight, and give a big "X" and a zero.

我会简单地打印一下，标记出来，然后打一大把叉，给个零分。

对于抄袭的想法 - SpeakingMax英语口语达人

But he says he felt the greatest satisfaction when a thirteen-year-old painted the word "gun" and then put a big "X" through it.

VOA: special.2009.06.01

When I call this class definition, it calls init, init and I give it an x and a y value.

我说过，当我们，调用这个类的定义的时候，它会去调用。

麻省理工公开课 - 计算机科学及编程导论课程节选

After a few seconds, when the X-15 was safely away, the pilot started its rocket engine.

VOA: special.2010.07.07

The highest probability now is going to be along the x-axis, so that means we're going to have a positive wave function every place where x is positive.

概率最高的地方是沿着ｘ轴，这意味着只要在ｘ,大于零的地方波函数都是正的。

麻省理工公开课 - 化学原理课程节选

In fact, he failed to recognize Planet X in a few photographs.

VOA: special.2010.07.11

The allusion to Aristophanes and the comic poet is a part of what Plato calls in Book X of the Republic the old quarrel between philosophy and poetry.

提及亚里斯多芬尼斯,是柏拉图《理想国》第10卷中所述,哲学与诗学长时争论的一部份,这项争论亦是柏拉图辩证的主体。

耶鲁公开课 - 政治哲学导论课程节选

A few became astronauts. The X-15 program lasted about ten years.

VOA: special.2010.07.07

Well, we want to know, after 2041, let's say 2045, is there somebody who's a person, call him Mr. X.

我们想知道，2041年后，假设是2045年吧，会不会存在一个人，我们称他为X先生。

耶鲁公开课 - 死亡课程节选

It was covered in a new material called "inconel x."

VOA: special.2010.07.07

So, in the language of calculus, x is a function of time and this is a particular function.

所以,从微积分的角度来看,x是一个关于时间的函数,而且是个很特殊的函数

耶鲁公开课 - 基础物理课程节选

Three months ago, someone stole a letter from Madame X.

VOA: special.2009.12.26

He still incurred -C because he ran and he also has a cost of |x-y| because he doesn't like Mr. Y winning.

他同样有-C的收益因为他参加了竞选,且他还有|x-y|的成本,因为他不喜欢Y先生获胜

耶鲁公开课 - 博弈论课程节选

Cappex.com -- c-a-p-p-e-x -- matches students with colleges and universities.

VOA: special.2009.02.26

And you can very quickly take this feature to an extreme 10 and start putting X and Y and A and B and 10 and all your variables up top because it would seem to solve all of your problems and stop all of your thinking, but it's generally not a good thing.

你可能迅速地使这个特征成为一个极端,开始把X和Y和A和B和0,和所有的变量都放在最前，因为好像它可以,解决你的所有问题，并中止你的想法，但通常这不是一件好事情。

哈佛公开课 - 计算机科学课程节选

The X-15 was a new idea.

VOA: special.2010.07.07

And there is a technique known as x-ray diffraction.

而且有种X光衍射的技术。

麻省理工公开课 - 固态化学导论课程节选

A less invasive procedure known as a virtual colonscopy is done with a CT scan that passes x-rays through a patient's abdomen.

VOA: standard.2010.04.07

This is a chest x-ray that would be taken in your doctor's office, for example, or a radiologist's office.

这是一张胸部的X光片,人们会在医生的办公室,或放射科医生的办公室之类的地方见到它

耶鲁公开课 - 生物医学工程探索课程节选

But some doctors say the CT scan exposes patients unnecessarily to harmful radiation, as much radiation as a patient might receive from 400 chest x-rays.

VOA: standard.2010.04.07

So we can have, if we have the final quantum number m equal plus 1 or minus 1, we're dealing with a p x or a p y orbital.

所以如果我们有,磁量子数ｍ等于正负１,我们讨论的就是ｐｘ或者ｐｙ轨道。

麻省理工公开课 - 化学原理课程节选

It exposes a patient to much larger doses of radiation than the usual x-ray.

VOA: standard.2010.01.30

x Inside of that structure, create a variable name x, and a value associated with it.

创建了一个变量名为，然后给它赋值，请注意我也在这边做的操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

Otherwise, I'm going to get a new guess by taking g, x over g, adding them, 2 and dividing by two.

或者呢，我会有一个关于g的新猜想,就是X大于g，将二者相加，然后除以。

麻省理工公开课 - 计算机科学及编程导论课程节选

And when I create a binding, x I'm taking a variable name, in this case x, stored somewhere in a table, and I'm creating a link or a pointer from that name to that value.

当我创建一个绑定的时候，我有一个变量的名字，在这个例子中是，存在一个表中的某处，然后创建一个连接,或者指针从这个名字指向目标值。

麻省理工公开课 - 计算机科学及编程导论课程节选

See, I've defined f of x to be a function x=x+1 that takes a value of x in, changes x to x+1, x and then just returns the value.

我定义了f是一个函数,输入x，让，然后输出。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I've got to worry about, is somebody else using ANS, answer, as a variable, in which case I've got to be really careful. Is somebody else using x as a variable? I've got to deal with a lot of those details.

而且我还要担心有没有别人,使用了ANS，answer作为变量,这样我就必须要非常小心,有没有别人用x当做变量呢？,我需要处理很多类似的细节。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I originally decided I was going to have as points, it's going to have internal values of an x and a y.

写了一堆代码,然后我以开始决定，是要把值放到点里面的,点有内部的x坐标和y坐标。

麻省理工公开课 - 计算机科学及编程导论课程节选