| 单词 | tangent |
| 释义 | tangent/ˈtændʒənt ||; ˈtændʒənt/noun[c] 1. a straight line that touches a curve but does not cross it 切线 ☞picture at circle 见circle插图 2. (mathematics数学) (abbr tan) the ratio of the length of the side opposite an angle in a right-angled triangle (= a triangle with one angle of 90°) to the length of the side next to it 正切（三角函数之一，指直角三角形某锐角的对边与其邻边之比） ☞compare cosine and sine. 与cosine及sine比较。 go off at a tangent (us 美) ;go off on a tangent to suddenly start saying or doing sth that seems to have no connection with what has gone before 突然改变话题或行动 tan·gent /`tændʒənt; ˈtændʒənt/n [c] 1. go off on a tangent to suddenly start talking or thinking about a completely different subject 突然改变话题［思路］ 2. technical a straight line that touches the edge of a curve but does not go through it 【术语】 切线 |
| 随便看 |
英汉双解词典收录171353条英汉汉英双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。