| 单词 | 在物体上 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔frottage〕A method of making a design by placing a piece of paper on top of an object and then rubbing over it, as with a pencil or charcoal.擦印画法：画图案的一种方法。把一张纸盖在物体上，然后用铅笔或石炭在上面摩擦美国传统〔kinematics〕The branch of mechanics that studies the motion of a body or a system of bodies without consideration given to its mass or the forces acting on it.运动学：力学的一个分支，研究一个物体或物体系统的运动，而不考虑加在物体上的质量或力美国传统〔zero gravity〕The condition of apparent weightlessness occurring when the centrifugal force on a body exactly counterbalances the gravitational attraction on it.失重状态：当作用在物体上的离心力与万有引力相抵消时出现的明显失重状态美国传统 |
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