滚下来

xiǎo xīn bié ràng yīng ér cóng chuáng shang gǔn xia lai

小心别让婴儿从床上滚下来。

Mind that the baby doesn't roll off the bed.

xǔ duō dà shí tou cóng sì zhōu dǒu zhí de shān pō shang gǔn xia lai

许多大石头从四周陡直的山坡上滚下来。

The boulders rolled down the steep slopes on either side.