设x为a加b之和。
X表示那些没有投票的。
Let's suppose X knows what Y is doing.
假设X知道Y正在干什么。
X and Y in the equation are both unknowns.
等式中的X和Y都是未知数。
X标出了所说的地点。
Can the value of y be predicted from the value of x?
能从x值推知y值吗？
The equation is impossible for any value of x greater than 2.
当x的值大于2时，这个等式不成立。
The possible permutations of x, y and z are xyz, xzy, yxz, yzx, zxy and zyx.
x、y和z的可能的组合方式为xyz、xzy、yxz、yzx、zxy和zyx。
因此，X随时间变化而变化。
你听到X这么说了。
这就是X老师。
我把X放在哪里呢？
X喜欢你吗？
这个X是做什么的？
He had to have his chest X-rayed.
他得进行胸部X光检查。
X-rays can penetrate many objects.
X射线能穿透很多物体。
All hand baggage would be x-rayed.
所有手提行李都要拍X光片。
我得去做X光检查。
The doctor studied the X-rays of her lungs.
医生研究了她肺部的X光照片。
She was advised to have an abdominal X-ray.
她被建议拍个腹部X光片。
The X-ray showed there was no break in his leg.
X光照片显示他的腿没有骨折。
A clerk had slipped the wrong tab on Tony's X-ray.
一位职员失手把一个错误的标签贴到了托尼的X光片上。
I suggested that he rest, and sent him for an X-ray.
我建议他休息，并叫他去作一次X光检查。
It will only register on sophisticated X-ray equipment.
只有在先进的X光设备上它才会显示出来。
X-rays have confirmed that he has not broken any bones.
X光片已经证实他没有骨折。
The x-ray detectors feed the input into computer programs.
X射线探测器把输入信息传入计算机程序。
The hospital staff held off taking Rosenbaum in for an X-ray.
医院工作人员推迟了让罗森鲍姆做X光检查的时间。
The benefit of an x-ray far outweighs the minutely increased risk of cancer.
x射线的好处要远远超过细小增加地癌症风险
You might still want to go for an X-ray, however, just to be on the safe side.
但你也许还想去拍张X光片，为保险起见。
In this example 'X' denotes the time taken and 'Y' denotes the distance covered.
在这个例子中，X表示所用的时间，Y表示所行的距离。
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