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| 单词 | radius |
| 释义 |
radius ['reɪ.di.əs] (plural radii) noun countable DISTANCE 长度 ■(the length of) a straight line joining the centre of a circle to its edge or the centre of a sphere to its surface （圆或球体的）半径，半径长度 •The radius of this wheel is 30 cm.这个轮子的半径是30厘米。 •This wheel has ■a distance 半径距离；半径范围；周围•The station, shopping centre and school lie within ['reɪ.di.əs] (plural radii)noun countable BONE 骨 specialized ■the thicker of the two bones in the lower arm 桡骨 |
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