| 单词 | rotational |
| 释义 | rotationrotation /roʊˈteɪʃən/ ●○○ noun 1[uncountable] math, geometry the action of a solid object turning with a circular movement around a central point inside it: the rotation of the Earth2[countable] one complete turn around a central point SYN revolution: The wheel takes a second to make one rotation.3[uncountable] the practice of changing regularly from one thing to another, or regularly changing the person who does a particular job: job rotation The three plays will be shown in rotation (=one after the other in a repeating order) throughout the summer.4[countable] a period of time spent doing a particular job, when you will soon change to a different job for the same employer: a new doctor’s rotation in the emergency room5[uncountable] technical the practice of regularly changing the crops that are grown on a piece of land, in order to preserve the quality of the soil SYN crop rotation6[countable] math, geometry a change in the position of a flat geometric shape when the shape turns around a fixed point—rotational adjective |
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