But now you know the ABCs of regular expressions.
但是您现在已了解了正则表达式的基本知识。
Now that you know about ABCs, let's continue with the new I/O system.
了解了ABC 之后，我们就可以继续探究新的I/O系统了。
They don't even need to learn the ABCs before they can speak English.
在他们会说英语之前，他们甚至不必学ABC。
They don't even need to learn the ABCs before they can speak English.
在他们会说英语之前，他们甚至不必学ABC。
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