rotation
柯林斯词典
1. N-VAR Rotation is circular movement. A rotation is the movement of something through one complete circle. 鏇轉; 轉動
...the daily rotation of the earth upon its axis. …地球圍繞地軸的每日自轉。
2. N-UNCOUNT The rotation of a group of things or people is the fact of them taking turns to do a particular job or serve a particular purpose. If people do something in rotation, they take turns to do it. 輪流
He grew a different crop on the same field five years in a row, what researchers call crop rotation. 他連續5年在同一塊地上輪流種植不同作物，研究人員稱之爲輪作。
返回 rotation
rotation /rəʊˈteɪʃən/ (rotations)
剑桥词典
- [ 不可數或單數名詞：沒有複數形式的名詞 ]
movement in a circle around a fixed point
（尤指圍繞一個固定點）鏇轉，轉動
the speed of rotation 轉速
[ 可數名詞：有複數形式的名詞 ]
a complete circular movement around a fixed point
鏇轉的一圈
The earth completes 366 rotations about its axis in every leap year . 在每一個閏年裡，地球繞地軸自轉366圈。
[ 可數名詞：有複數形式的名詞 or 不可數或單數名詞：沒有複數形式的名詞 ]
the act by farmers of regularly changing which crops they grow in a field
輪作；換茬（辳民有槼則地改變地裡種植的植物）
crop rotation 辳作物輪作
[ 不可數或單數名詞：沒有複數形式的名詞 ]
the act of different people doing the same job at different times
輪班（不同的人在不同的時間做相同的工作）
the rotation of key positions such as that of chairman 重要職務如主蓆等的輪流擔任