light hollow ball used in playing table tennis

The boy plays ping-pong ball three times a week.

这个男孩一个星期打三次乒乓球。

But engineers are hoping that their pretesting—using compressed air to fire a ping-pong ball down the pipe, Gillies says—will prevent such a mishap.

但工程师们希望他们的预测试——使用压缩空气将乒乓球注入管道——也许可以避免此类事故，Giilies 认为。

You hit the ping-pong ball with this paddle.

你用这个球拍打乒乓球。

The ping-pong ball bounced off the table.

乒乓球弹出了桌外。

The ping-pong ball comes back - almost with the same speed-- not quite, 1 because the ratio is not infinity to one 1 but it is 500 to one, and the billiard ball will do practically nothing.

乒乓球会弹回来,几乎保持原来速度-,并不完全相同，比例并非无限大比,但它是500比，台球实际没有任何改变。

Here we have not a bowling ball onto a ping-pong ball but we have a billiard ball.

我现在不让保龄球，去撞乒乓球，而是拿一个台球。

It「s really surprising that a small ping-pong ball could attract so many people.

说也奇怪，一个小小的乒乓球怎么会吸引这么多观众呢？

Now, of course, it is way harder to see that the ping-pong ball gets twice the speed of the billiard ball, because we don」t do...

当然，更难看出的是，乒乓获得了两倍的速度，是台球速度的二倍，因为我们并没有做。

He likes play ping-pong ball, but ont satisfy the number of ping-pong table. He is the captain of his school「s ping-pong ball term.

他不喜欢我们学校数量很少的乒乓球台，因为他是他们学校乒乓球队队长。

Realizing from the newly-bought TV set that ping-pong ball is「national ball」, the kids decided to return the ball to the state.

后来从电视里他们知道了乒乓球是国球，于是孩子们决定出走将乒乓球去「还给国家」。

Forty years ago, a little ping-pong ball broke the ice and the door to China-US contacts was reopened.

40年前，小小乒乓球击破坚冰，中美交往大门重新打开。

It is intuitive that if the billiard ball hits the ping-pong ball that it will continue.

需要凭借直觉的是，台球撞击了乒乓球，而它继续运动。

The ping-pong ball is light.

乒乓球是轻的。

It」s not going to be a backscatter event if your ping-pong ball hits the frame or these strings, or the top part.

打到原子核了就是背散射，如果打到框上。