But inside they are really kissing Cousins: most of the parts are the same no matter what the name.
但是从内部基本结构上看,这些汽车大同小异。不管汽车是什么牌子,它们的大部分零部件完全一样。
The calling code can obtain the information it needs to pass to the procedure and then call a single procedure name, no matter what arguments it is passing.
调用代码可以获取它需要传递给过程的信息,然后调用单个过程名,无论它传递的是什么参数。
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