In my experience, it will usually be a particular inner or nested loop, or a call to some third party library methods, which is the main culprit for running the program slow.
以我的经验来看，导致程序运行速度慢得罪魁祸首可能就是某个内部或嵌套循环，也可能是对第三方库函数的调用。
Therefore, the standard library can be used to provide realistic and interesting examples well before a reader can be assumed to understand its inner workings.
因此，在假定读者已经理解了标准库的内部工作原理之前就可以利用它提供许多更实际更有趣的例子。
The reason why Abstract Library Science has aroused suspicion lies in its unsound foundation of inner source construction, and in its lack of philosophical taste and research on concrete evidence.
“抽象图书馆学”招致置疑的主要原因是其内在资源建设的根基不牢，缺少哲学品位，缺乏实证研究。
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