This is a table tennis ball.

这是一个乒乓球。

The table tennis ball volume?

乒乓球的体积？

Boil one table tennis ball for 2 minutes. When it expands, take it out.

将一只乒乓球煮烫2分钟，待球体膨胀后取出。

It's quite unbelievable that an eye ball is the same size as a table tennis ball.

这是相当令人难以置信的那一球是眼睛同等大小的乒乓球。

And he also has a remarkable skill table tennis ball technology, he often teaches me, I train together.

他也有一手乒乓球技术，他经常教我，和我一起训练。