- 回旋陀螺
- 咔哒背甲兽
- rattlebox: 格格响的玩具盒; 轰匣; 玩具盒
- rattle-voiced tree-frog: 鼠吱雨蛙
- rattlebrain: 头脑空虚的人; 愚蠢多嘴的人
- rattle-snake: 〔美国〕【动物；动物学】响尾蛇 (rattle snake and polecat 〔美国〕时常吵闹的两个人)。
- rattlebrained: 头脑空虚的; 愚蠢多嘴的
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rattleback中文什么意思
- 回旋陀螺
- 咔哒背甲兽
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百科释义
A rattleback is a semi-ellipsoidal top which will rotate on its axis in a preferred direction. If spun in the opposite direction, it becomes unstable, "rattles", stops and reverses its spin to the preferred direction.
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