| 单词 | tangent |
| 释义 | tangent ['tæn.dʒənt] noun countable CIRCLE 圆 ■a straight line which touches but does not cut into a curve 切线 ['tæn.dʒənt] noun countable TRIANGLE 三角 (written abbreviation tan) specialized ■(in a triangle that has one angle of 90°) the ratio of the length of the side opposite an angle less than 90° divided by the length of the shorter of the two sides that are next to the angle 正切 Compare cosine ; sine ['tæn.dʒənt] noun countable go/fly off at a tangent UK (US go off on a tangent) ■to suddenly start talking or thinking about a completely new subject 突然离题；突然离开原来的思路 •It's hard to get a firm decision out of him - he's always going off at a tangent.很难从他那里得到一个明确的答覆——他老是突然离题扯别的去了。 |
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