以上来源于: WordNet
Perhaps they can do so without the Sunday morning bouncing ball memories I have.
或许他们能找到,而不需要拥有我那种周日早上从床上弹起来看球的回忆。
The mid-19th century, Europeans mastered the rubber, which can only make the bouncing ball.
19世纪中叶,欧洲人掌握了橡胶技术之后,才做出了能弹跳的球。
For example a bouncing ball tends to have a lot of ease in and out when at the top of its bounce.
比方说,一个弹跳的小球凡是在它达到顶点的时候都会有渐进和渐出。
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