1. | [u] 旋转;转动the action of an object moving in a circle around a central fixed point |
the daily rotation of the earth on its axis 地球每天的自转 |
2. | [c] (旋转的)一周,一圈one complete movement in a circle around a fixed point |
This switch controls the number of rotations per minute. 这个开关控制着每分钟的转数。 |
3. | [u][c] 轮换;交替;换班the act of regularly changing the thing that is being used in a particular situation, or of changing the person who does a particular job |
crop rotation/the rotation of crops(= changing the crop that is grown on an area of land in order to protect the soil) 庄稼的轮作 | |
Wheat, maize and sugar beet are planted in rotation . 小麦、玉米和甜菜是轮流种植的。 | |
The committee is chaired by all the members in rotation . 委员会由所有成员轮流主持。 |