n.滚筒；滚轴；滚转机；巨浪
There is rust spot on some of the roller. 有些滚筒上有锈斑。
Be careful to keep the roller and plate clean. 注意使辊轴和版材保持干净。
May I borrow your roller skates? 我可以借你的旱冰鞋吗？
Huge rollers broke on the beach. 巨浪冲击着海滩。
