roll-in的用法和样例：
例句
- The little pieces of which are broken off from hills and mountains roll down into the valleys,and we sometimes find great heaps of rough,sharp stones near the bottom of a mountain.
从岩石上剥落下来的小石头片滚入山谷，我们有时在山脚的附近发现大量粗糙尖锐的石头。
词汇搭配
- roll in 滚滚而来
- roll-in altitude 集合高度
- moment in roll 倾侧力矩
- cargo in roll 卷装货
- damping in roll 滚动阻尼
- roll in wealth 浑身都是钱
- roll in the hay 交欢
- roll in riches 在钱里打滚,一身是钱...
- roll them in the aisles 演得很成功
- roll in money 在钱里打滚
