我把物体放，在斜面上，增加倾斜角度，直到开始下滑。

So we're going to put a particular object on that incline and I'm first going to raise the Angle until it breaks loose.

youdao

我把物体放，在斜面上，增加倾斜角度，直到开始下滑。

So we're going to put a particular object on that incline and I'm first going to raise the Angle until it breaks loose.

youdao