n.[U][C]

1. 旋轉；【天】自轉
   The sun appears to rise and set because of the earth's rotation.

   因為地球在自轉，看上去就有了日出和日落。

2. 循環；輪流，交替；（農作物的）輪作
   the rotation of kitchen chores

   輪流做廚房裡的雜務

3. 【物】旋光性

n.

1. the action or process of rotating.
2. US a tour of duty, especially by a medical practitioner in training.

[名]

1. ①旋轉；轉動。
2. ②輪流。

衍生