Rotation
[ ro'teʃən ]
第4级
其它 Other
n. 旋转，转动;轮流，循环;[农]轮作;[天]自转;
💡 词根助记
rot轮，转+ation名词后缀 →旋转，转动，轮流，循环
📝 例句
The crankshaft makes three rotations for each rotation of the rotor.
转子每转一周，曲轴转3周。
Convolutions frequently alternate in direction of rotation and vary in pitch.
盘旋经常改变回转方向和节距。
A counterweight balances the rotation.
有一个砝码平衡回转。
Changing the rate of cylinder rotation changes the speed selected.
改变圆筒旋转速率就改变被筛选的速率。
the rotation of kitchen chores
轮流做厨房里的杂务
🌱 联想助记
源于：rotate（v 使旋转）
✅ 同义词
🔤 词根
-rot-表示“转动”
📖 牛津释义
rotation
n
1
(a) [U] rotating or being rotated 旋转; 转动
the rotation of the Earth 地球的自转.
(b) [C] one complete movement of this type （旋转的）一圈; （一）转
five rotations per hour 每小时旋转五圈.
2 [C, U] regular organized sequence of things or events 轮流; 轮换
the rotation of crops/crop rotation, ie varying the crops grown each year on the same land to avoid exhausting the soil 作物的轮作[轮种].
3 (idm 习语) in rotation in turn; in regular succession 轮流地; 轮番地; 循环地
The chairmanship of the committee changes in rotation. 委员会主席一职是轮流担任的.
🔁 扩展释义
*[rәu'teiʃәn]n. 旋转, 循环, 轮流【计】 旋转【化】 自转; 转动; 旋转【医】 旋转, 转动【经】 循环, 轮流, 交替
🏥 医学释义
旋转，循环，转动
🌿 同词根单词
📖 同为「CET-4」词汇
查看全部CET-4词汇 ›🗣️ 情景例句
Yes, my brother Bob is coming with me to the airport to see me off.
有，我兄弟鲍勃将和我一起到机场，送我上飞机。
Thanks a lot.
多谢。
My grammar is improving, but I find idioms and useful expressions hard to learn.
我的语法在进步，但我发现习语和有用表达很难学。