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TOEFL IELTS BNC: 7090 COCA: 9413
radius
/ˈreɪdiəs ||; ˈredɪəs/noun [C] (plural radii) /-diaɪ ||; -dɪˌaɪ/
1 the distance from the centre of a circle to the outside edge 半径 ☞Look at diameter and circumference. 参看diametercircumference ☞picture at circlecircle插图
2 a circular area that is measured from a point in its centre 半径范围: The wreckage of the plane was scattered over a radius of several miles. 飞机的残骸散落在方圆数英里的地方。
3 (medical医学) the shorter bone of the two bones in the lower part of your arm between your wrist and your elbow 桡骨 ☞Look at ulna. 参看ulna ☞picture at bodybody插图
TOEFL IELTS BNC: 7090 COCA: 9413
radius/ˋredIəs; ˈreIdiəs/ n [C] plural radii /-dI͵aI; -diaI/1 the distance from the centre to the edge of a circle〔圆的〕半径 2 within a 10 mile/200 metre etc radius within a distance of 10 miles etc from a place in any direction 方圆 10 英里/200 米等范围内
TOEFL IELTS BNC: 7090 COCA: 9413
radius radiusradii noun (plural radii )the length of a straight line from the centre of a circle to the outside Look at diameter.

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