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

If you can't draw a straight line, then use a ruler! Otherwise, try to stretch your visual creativity with some of the projects below.

如果你不会画直线，那就用把尺，或者，试着做做下面的事情拓展你的视觉创造力。

youdao

Cut a good figure, I have also used a ruler painted on wrapping paper on a long, straight ribbon.

图剪好后，我又用尺子在包装纸上画下了一条又长又直的飘带。

youdao