Let x be the sum of a and b.

设x为a加b之和。

《牛津词典》

Let x be the equal of y.

设 x 等于y。

《新英汉大辞典》

Let X denote the studied flood flow variable and (?)

令x表示所研究的洪水变量，(？)

youdao

Let us just call her Madame X.

VOA: special.2009.12.26

But I want you to see now what happens if I use this. Let's bind x to the value of 3.

但是我想你看看如果我这么用的话,会发生什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let's test it in all possible combinations of x and y and see if we get the right answer.

来测试并看看,返回的结果正确不正确。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let x be the number of people likely to be telling stories about me.

WSJ: Millions Will Say They Slept With Me

And what Islamicate means is that just because Islam teaches, let's say X, Y, and Z, but as a culture, a Muslim need not necessarily be a religious or a pious Muslim to start doing these things.

CENTERFORSECURITYPOLICY: Raymond Ibrahim: Shariah, Dhimmitude & the Copts

So if you hold that right swiping gesture just a bit longer, the bar turns red and the checkmark turns to an x to let you know that if you let go at this point you will delete the current message.

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