roll down

滚下

例句与用法：

The ball rolled down the hill.

球滚下了山。

The stone rolled down the hill.

石头滚下山。

As the rock rolled down the mountainside, it gathered momentum.

石头滚下山时，它的动量增加。

As his voice rose the tears began to roll down her cheeks.

随着他的嗓音提高，她的眼泪开始簌簌地直往下流。