So far, all of the optimizations that we have looked at were language-level optimizations made by the GWT compiler.

目前为止，我们检查的所有优化都是GWT编译器所做的语言级别的优化。

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Perhaps the best and most successful example of this is a compiler, which translates a high-level language program into an equivalent machine language implementation.

也许这方面最好和最成功的例子就是编译器，它能够将一个高级语言程序解释成一个与之相当的机器语言的执行程序。

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Although BCPL was a high-level language (similar to c), the intermediate code that the compiler generated was called O-code (Object code).

尽管BCPL是一种高级语言(类似于c)，编译器生成的中间代码叫做o - code(对象代码)。

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