noun🔗Share切线 A straight line touching a curve at a single point without crossing it there."Imagine drawing a straight line on a soccer ball; the line would be one of many tangents to the ball's curved surface. "想象一下在一个足球上画一条直线；这条直线就是很多条与球体弧面相切的切线中的一条。mathtechnicalpointChat with AIVocabulary GamePractice Reading
noun🔗Share正切, tan值. A function of an angle that gives the ratio of the sine to the cosine, in either the real or complex numbers. Symbols: tan, tg."In trigonometry class, we learned that tangents relate angles to the ratios of sides in right triangles. "在三角函数课上，我们学到正切值可以将直角三角形中的角度和边长比例联系起来。mathfunctionChat with AIVocabulary GamePractice Reading
noun🔗Share题外话，离题，跑题。 A topic nearly unrelated to the main topic, but having a point in common with it."I believe we went off onto a tangent when we started talking about monkeys on unicycles at his retirement party."我觉得我们在他的退休派对上开始聊猴子骑独轮车的时候，就跑题了。communicationlanguagewritingpointwordChat with AIVocabulary GamePractice Reading
noun🔗Share琴槌, 击弦器。 A small metal blade in a clavichord that strikes the strings to produce sound."The clavichord player carefully adjusted the tangents to ensure each note rang clearly. "羽管键琴演奏者小心地调整琴槌（击弦器），以确保每个音符都清晰地发出。musicpartdevicemachineChat with AIVocabulary GamePractice Reading
