Doing so would almost always be a serious mistake, however, because even when their return values are used in this way, list-related functions still modify their original argument.
但是这样做通常是一个严重的错误，因为即使它们返回的值以这种方式使用，与列表相关的函数仍然修改它们的原始参数。
Pro does additionally include performance- and memory-profiling, so if you're doing serious enterprise development it can be a useful upgrade in any case.
专业版还可以进行性能与内存分析，因此如果你正在进行要求严 格的企业级开发，那么无论如何也要升级到专业版。
Doing this in English may be difficult, but remember that finance is a very international industry, and if you want to do serious work in it, you will have to be able to talk about finance in English.
用英语做到这一点可能有些困难。但请记住金融是一个十分国际化的行业，假如你想在该领域从事严肃的工作，你就必须具备用英语谈金融的能力。
Doing this in English may be difficult, but remember that finance is a very international industry, and if you want to do serious work in it, you will have to be able to talk about finance in English.
用英语做到这一点可能有些困难。但请记住金融是一个十分国际化的行业，假如你想在该领域从事严肃的工作，你就必须具备用英语谈金融的能力。
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