根据球面上任意点到球心的距离相等的数学定义，运用实现基本动作，结构最简化的设计思路，设计一种内球台球面在卧式车床加工的装置。

To introduce a method of machining technics for inner ball face by horizontal lathe with according to the theory of any two points on ball face to the center of the ball are equal.

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在俱乐部楼内部，有个台球台，一个会议室和一个风扇博物馆。

Inside the club building. There is a billiard table, a place for meetings and a museum of fans.

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为了保证儿子总有球台练习球技，丁文钧放弃了原来的生意，开了一家台球室。

In order to ensure that the boy always had a table on which to practice, Ding Wenjun gave up his business and opened a snooker club.

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Except for electromagnetism, the basics of mechanics, which is the motion of Billiard balls and trucks and marbles and whatnot, was set up by Newton.

除电磁学外,力学的基础,也就是台球,卡车,弹球以及其它小玩意儿的运动原理,都是由牛顿建立起来的

耶鲁公开课 - 基础物理课程节选