The increase in brightness of the x-ray sources over the same period has occurred far faster.

在同一时期内，X 射线光源亮度的增加速度要快得多。

youdao

Mr. X said that over the past two decades he's tried many times to learn to drink but failed.

X说，过去二十年里他很多次尝试学着喝酒，但还是不行。

youdao

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。

youdao

The X-15 flies high over the sandy wasteland of California's Mojave Desert.

VOA: special.2010.07.07

Mathematically complete problem is that you can find the function x of t by saying that the second derivative of the function is equal to -k over m times the function.

这个数学问题就是,你可以求出函数 x,只要令函数的二阶导数,等于 -k 除以 m 再乘以函数

耶鲁公开课 - 基础物理课程节选

Then the X-15 pushes over the top of its flight path.

VOA: special.2010.07.07

Somebody else is offering X-20 over there.

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Monikered as the not-so catchy SRS-BTX500 and BTX300, both can handle AAC and apt-X streaming over Bluetooth and stay charged for eight and six hours, respectively.

ENGADGET

There are two types one bounces electromagnetic waves off the body to create an image like this and the other uses backscatter technology to project low level X-ray beams over the body resulting in images like this.

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