cogwheel
英 [ˈkɒɡwiːl]
美 [ˈkɑːɡwiːl]
n. 齿轮
复数：cogwheels
牛津词典
noun
- 齿轮
a wheel with a series of teeth on the edge that fit between the teeth on the next wheel and cause it to move
英英释义
noun
- a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion