You'll need to learn to draw a straight line before you can paint the Mona Lisa.

在你可以画蒙娜丽沙以前，最起码你应该学会画直线吧。

youdao

You'll need to learn to draw a straight line before you can paint the Mona Lisa.

在你可以画蒙娜丽沙以前，最起码你应该学会画直线吧。

youdao