这可以提供有关创建图文件以后发生的变化的持续观察，这在重构项目中的代码时非常有用。

This gives you an ongoing view of what has changed since the map file was created, which can be very useful when refactoring code in a project.

youdao

这对我非常有用，因为我能对代码进行跟踪调试。

This helped greatly, because I could step into the code and debug it.

youdao

虽然代码有时候还比较粗糙，但是通常都非常有用，文章本身就是围绕代码构建的，在给出代码的同时进行了解释。

The code is sometimes unpolished, sometimes too specific, but it's always useful, and the article itself simply builds up to the code, presenting it with an explanation.

youdao

This chart, very boring and uninteresting but useful to say there are very well defined rules as to when you're writing code, what operators, like what syntax should get evaluated first.

这个图表，看起来很烦，很无趣，但是它很有用,有非常明确的规定,譬如，当你写代码时，就会涉及操作符的优先级。

哈佛公开课 - 计算机科学课程节选