| 词汇 | tangent |
| 释义 | tangent noun [ C ] mathematics specialized uk/ˈtæn.dʒənt/ us/ˈtæn.dʒənt/ (CIRCLE) 切线 a straight line that touches but does not cut into a curve (TRIANGLE) (written abbreviation tan)正切 (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 Compare: cosine sine Idiom go off on a tangentidiom (UK also go/fly off at a tangent) 突然离题;突然离开原来的思路 to suddenly start talking or thinking about a completely new subject It's hard to get a firm decision out of him - he's always going off on a tangent. 很难从他那里得到一个明确的答复——他老是突然离题扯别的去了。 |
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