tangent

英 [ˈtændʒənt]

美 [ˈtændʒənt]

n.  切线; 正切

复数：tangents　

TEM8

BNC.21952 / COCA.24421

习惯用语

n.

fly/go off at a tangent
• 突然转换话题；突然改变行动
  to suddenly start saying or doing sth that does not seem to be connected to what has gone before

牛津词典

noun

• 切线
  a straight line that touches the outside of a curve but does not cross it
• 正切
  the ratio of the length of the side opposite an angle in a right-angled triangle to the length of the side next to it

柯林斯词典

• 切线
  Atangentis a line that touches the edge of a curve or circle at one point, but does not cross it.
• PHRASE 突然偏离原来的思路;突然离题
  If someonegoes off at a tangent, they start saying or doing something that is not directly connected with what they were saying or doing before.
  1. The conversation went off at a tangent.
     交谈突然偏离了正题。

英英释义

noun

• ratio of the opposite to the adjacent side of a right-angled triangle
  Synonym:tan
• a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point

双语例句