单词：rollers
n a long heavy sea wave as it advances towards the shore
n a small wheel without spokes (as on a roller skate)
n a cylinder that revolves
n a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it
n Old World bird that tumbles or rolls in flight; related to kingfishers
n pigeon that executes backward somersaults in flight or on the ground
rollers的用法和样例：
例句
- There are rust spots on some of the rollers.有些滚筒上有锈斑。
- The auto focus feature and film cleaning rollers insure optimal input quality.自动对焦功能和胶卷清洁滚筒可确保最佳输入质量。
- Metal rollers clank rhythmically inside the Imperial Distributors warehouse, as employees slide boxes packed with health and beauty products down the lines.帝国经销公司的仓库里，随着员工把装满保健美容产品的箱子从货运线上拖下来，金属滚轴有节奏地叮当作响。
- Such a drive scheme exhibits frictional and damping behavior because sliding always occurs between the ball and rollers, for which compensation must be made.这种驱动方式同时具备摩擦和减震两种特性，因为球和滚轴之间一定会有滑动，所以必须补偿回来。
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