| 词汇 | rotation |
| 释义 | rotation 1 ENTRIES FOUND: rotation (noun) rotation /roʊˈteɪʃən/ noun plural rotations rotation /roʊˈteɪʃən/ noun plural rotations Learner's definition of ROTATION 1 a [noncount] : the act or process of moving or turning around a central point旋转；转动 the rotation of the Earth around its axis地球绕地轴的自转 the rotation of the Moon around the Earth月亮绕地球的公转 b [count] : a complete turn around a central point（旋转的）一周，一圈 The Earth makes one rotation every day.地球每天自转一周。 2 a [noncount] : the act of regularly changing something by replacing it with something else轮换；交替 crop rotation农作物轮种 Alfalfa and corn are planted in rotation.苜蓿和玉米轮流种植。 b : the act of regularly changing the place or position of things or people so that each takes the place of another地点（或位置）的定期调换 [noncount] the rotation of the job of club president俱乐部主席的轮值 [count] The car needs a tire rotation.这汽车需要调换一下轮胎的位置了。 3 [count] US : the group of people who take turns doing something轮班的人 Where are we in the rotation? [=when is it our turn?]什么时候轮到我们？ (baseball) The team has a good (starting) rotation. [=group of pitchers who start games]这个队的首发投手阵容强大。 — rotational /roʊˈteɪʃənl̟/ adjective, always used before a noun, technical the rotational axis旋转轴 rotational motion旋转运动 |
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