| 单词 | radius |
| 释义 | radius /'reidias; 'redias/ n (pl -dii) /-dial; -di,ai/ 1 (length of a) straight line from the centre of a circle or sphere to any point on the circumference or surface, 半径。 → the illus at circle. 参看 circle 之插图。 2 circular area measured by its ~: 以半径度量之圆形面积： The police searched all the fields and woods within a ~ of two miles. 警方搜查半径两英里范围内所有的田野和森林。 3 (anat) outer of the two bones in the forearm. (解剖)桡骨。 → the illus at skeleton. 参看 skeleton 之插图。 |
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