You don't have to declare a special variable for it if you don't care about its actual value.

你并不需要为它声明一个特定的变量,如果你不关心它的实际值。

哈佛公开课 - 计算机科学课程节选

In other words, lower the amount insured below the actual value of the house to prevent moral hazard.

换句话说，将房屋的保险价值低估于其实际价值,以此来防范道德风险。

耶鲁公开课 - 金融市场课程节选

Well, what's the actual value?

准确值是多少？

麻省理工公开课 - 固态化学导论课程节选

We have a pointer to the location in memory that contains the actual value, which itself might be a bunch of pointers, and we have a pointer to the actual-- sorry, a pointer the value and we have a pointer to the next element in the list. All right?

包含实际值的地址,可能实际值,也是一系列指针,这里还有指向实际，抱歉，指向下一个元素的指针,我们来整理下？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, this is not the nicest way to do it but it'll work. I can look at the type of the value of base and compare it to the type of an actual float and see, are they the same?

这不是最好的办法但它确实有用,我可以得到底的值的类型然后,和一个真的浮点数的类型比比,看他们是不是一样？

麻省理工公开课 - 计算机科学及编程导论课程节选

And again, a related problem that people run into is side-effects. You call a function and it returns a value, but maybe it, on purpose or on accident, modifies one of the actual parameters.

另外，一个人们常碰到的相关问题,就是副作用，你调用一个函数它返回一个值,但是故意或者无意的,它可能会修改一个实参的值。

麻省理工公开课 - 计算机科学及编程导论课程节选