The twenty-one year-old throws a sharp breaking ball that cuts across the plate at the last second.

VOA: special.2010.06.18

So, it'll be considered a backscatter event if your ping-pong ball hits one of the nuclei.

什么情况是背散射,如果你们的乒乓球。

麻省理工公开课 - 化学原理课程节选

Let's do one more because I am having a ball.

我们再来看一个,因为我已经对这样的模型上瘾了。

麻省理工公开课 - 固态化学导论课程节选

If he misses the shot and one his teammates is able to regain control of the ball, it is called an "offensive rebound."

VOA: special.2011.03.25

So, they're sitting down and they're seeing a movie where one character's going to help a ball achieve a goal, and another character's going to hinder the ball.

所以婴儿们坐着看影片,影片讲述一个人极力进球,而另一个人要极力阻挠

耶鲁公开课 - 心理学导论课程节选

The ball was made of iron and wood and it was lit with one hundred lights.

VOA: special.2009.12.28

The pitcher of one team throws the ball to a batter from the other team.

VOA: special.2009.04.12

But if the batter hits the ball and it is not caught, the batter tries to run to one or more of the four bases on the field.

VOA: special.2009.04.12

Close one hand to form a ball.

VOA: special.2009.08.11