radius [ˈreɪdiəs]以下由轻松背单词网站提供
单词级别第7级基本释义n.半径,半径范围;有效航程,范围,界限英英释义(the length of) a straight line joining the centre of a circle to its edge or the centre of a sphere to its surface参考例句He has visited every shop within a radius of two miles. 周围两英里以内的店铺他都去过。We are measuring the radius of the circle. 我们正在测量圆的半径。 推荐阅读 |