| 单词 | triangle |
| 释义 | triangle n. 1. a plane figure with three sides and angles. 2. any three things not in a straight line, with imaginary lines joining them. 3. an implement of this shape. 4. a musical instrument consisting of a steel rod bent into a triangle and sounded by striking it with a small steel rod. 5. a situation, esp. an emotional relationship, involving three people. 6. a right-angled triangle of wood etc. as a drawing-implement. 7. Naut. a device of three spars for raising weights. 8. hist. a frame of three halberds joined at the top to which a soldier was bound for flogging. Phrases and idioms triangle of forces a triangle whose sides represent in magnitude and direction three forces in equilibrium. Etymology: ME f. OF triangle or L triangulum neut. of triangulus three-cornered (as TRI-, ANGLE(1)) |
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