In this case, I rotate the line around the center of the movie with the code shown below.

在本例中，我用下面所示的代码使这条直线围绕动画的中心旋转。

youdao

The line Numbers in this code are not part of the code itself.

代码中的行号都不是代码本身的一部分。

youdao

Line 5 in the code now extends the class properly.

代码中的第5行现在正确地扩展类。

youdao

So really, the rule of thumb if you think back to Scratch is -- that any time you write a statement -- -- something that does something in one line of code -- you generally need the semicolon there.

实际上，根据经验，你们回忆一下在Scratch中,任何时候你们写一条语句-,处理一些操作的一行代码-,你们通常需要在那里加个分号。

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