This is a ruler, and that's an eraser.

在你的课桌上有一块橡皮和两把尺子。

youdao

This is the ruler [with that] you can draw a straight line.

③这就是那把尺子，您可以用它划一条直线。

youdao

At this point, our command line is getting a little complex, and we still have only the major marks on our ruler.

此时，我们的命令行变得有点复杂了，但是我们的标尺上仍然只有主要标记。

youdao

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