然而，JIT编译器还必须注意抵消它编译程序消耗的时间，因为这些时间将延长程序的执行时间。

However, the JIT compiler must also carefully balance the time it takes to compile a program because that time adds to the program's execution time.

youdao

当你编译程序时，编译器可以分辨出哪个是数字，哪个是字符串。

When you compile your program, the compiler knows which piece of code is a number, which is a string and so on.

youdao

对象的意义变得越来越“动态”，它们的结构和行为无法通过静态类型来捕获，或者至少编译器在编译程序时无法得知对象的结构和行为。

Increasingly, objects are "dynamic" in the sense that their structure and behavior is not captured by a static type, or at least not one that the compiler knows about when compiling your program.

youdao

> That lets the compiler know that you want to use some actual compiled code from that library.

>，那是告诉编译器我们想要在程序库中,使用一些当前的编译后的代码。

哈佛公开课 - 计算机科学课程节选

So I tried running a program in this little black and white window called GCC and we'll see it today working properly that is a so called compiler.

在一个名为GCC的黑色小窗口里,运行我们的程序,然后得出想要的结果,这就是所谓的编译器。

哈佛公开课 - 计算机科学课程节选

So that is a flag that tells the compiler that I want to use or link into my own program code that someone else wrote that lives somewhere else on the system whose moniker is CS50.

所以那是一个标记，用来告诉编译器我想使用,或连接我自己的程序代码到一个叫做CS50的系统中的程序,可能其他人在那个系统写了这些程序。

哈佛公开课 - 计算机科学课程节选