roll-on roll-off

例句：

1. 1. The car rolled down the hill.
   汽车从山坡上滚了下来。
2. 2.She rolled up her sleeves and started working on the project.
   她卷起袖子开始做这个项目了。
3. 3. Roll up your sleeves and get ready to work.
   卷起你的袖子，准备干活了。
4. 1. The tires rolled off the road.
   轮胎从路上滚了出去。
5. 2. The car rolled off the ramp and onto the highway.
   汽车从斜坡上滚到了高速公路上。
6. 3. The rain rolled off the roof and soaked everything inside.
   雨水从屋顶滚下来，把屋里的东西都淋湿了。