You have a tube, a transparent--a tube--a hollow tube, and at the top of the tube you throw a ball through so it whips through the tube and it comes out.

用一根管子,一根透明中空的管子,从管子最上面,你丢进去一个小球,小球迅速穿过管子,飞出来

耶鲁公开课 - 心理学导论课程节选

Tim Wakefield Tim Wakefield on the DL right now throws a lot slower, because he has that tricky knuckle ball, he doesn't need to throw as fast.

现在受伤停赛的,投的很慢，因为他有一个很难处理的指节球，他不需要扔的很快。

麻省理工公开课 - 化学原理课程节选