It was an electronic form of ping-pong or table tennis that was easy enough for anyone to play.

VOA: special.2011.02.23

And again, you don't teach an animal to play Ping-Pong by waiting for it to play Ping-Pong and then rewarding it.

同样，你并不能通过等待动物打乒乓球,然后给其奖励,来使动物学会打乒乓球。

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