不可变数据是不能更改的，因此读取不可变数据无需用到锁，即使有多个线程读取时也是如此。

Immutable data cannot be changed and thus reading immutable data does not require locks, even when multiple threads are reading.

youdao

研究某个变数对另一个或多个其他变数的依赖关系时，回归分析常常要进行冗长烦琐的计算。

In studying the dependence of one variable on one or more other variables, regression analysis often involves tedious and lengthy calculations.

youdao

想要知道控制变数目前的值为多少，只需输入控制变数的名称而不接任何的参数即可。

To see the current value of a console variable just type the name without any parameters.

youdao

For the simple reason that the number of possible chess games is so huge, that computers can't calculate it.

原因很简单,棋局的潜在变数相当之大,以至于计算机根本无法将其完全计算出来

耶鲁公开课 - 死亡课程节选

However, there's one other variable that you want to be aware of and that is, he knows he ought to be going straight ahead like that, but he also knows that his right flank is open.

然而,还有其他变数是必须考虑到的,那就是,士兵知道他是向前直行的,但是,他同样知道他的右路是洞开的

耶鲁公开课 - 古希腊历史简介课程节选