好词典

tangents

UK //ˈtæn.dʒənts//US //ˈtæn.dʒənts//

词源

源自拉丁语 'tangentem'(接触),经由古法语 'tangente' 进入英语。

noun

❶ 在数学中,指与曲线或曲面仅接触于一点的直线,用于描述几何关系。

“The line is tangent to the circle at point P.”

(这条直线在点P处与圆相切。)

“Draw a tangent to the curve at this point.”

(在这点上画一条曲线的切线。)

❶ 比喻突然偏离主题的言论或行为,常指谈话中突然转到无关的话题。

“He went off on a tangent about his vacation during the meeting.”

(他在会议上突然岔开话题,谈起了他的假期。)

“Her mind often wanders off on tangents during conversations.”

(她在谈话中经常走神,偏离主题。)

同义词:digression, deviation, aside

常见短语

go off on a tangent — 突然偏离主题,开始谈论无关的事情。

“During the lecture, the professor went off on a tangent about his childhood.”

(在讲座中,教授突然跑题,谈起了他的童年。)