roll off

辗轧, 轧去, 滑离, 机翼自动倾斜

例句与用法：

The sweat rolled off in great drops.

汗水一大滴一大滴地流下来。

Put the ball carefully on the table, so that is won't roll off.

球放到桌上时要小心，别让它滚下来。