| 释义 |
tri.go.nom.e.tryHtrIg7E5nBm7E7tri, $-5nB:7mE-n [U]infml trig trIGa type of mathematics that deals with the relationship between the angles and sides of triangles. Practical uses are the measurement of the height of buildings, mountains etc.三角学Trigonometry concerns the functions of angles, such as sine, cosine and tangent.三角学是关于角的功能的学科，例如正弦、余弦和正切。
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