As you might have guessed from his name, Harpo Marx was famous for playing the musical instrument called the harp.

VOA: special.2009.07.19

And J.J. Balmer in 1885 playing with the numbers asociated with the lines there, you notice how the lines are colored?

885年，巴尔末,开始把光线与数字联系起来，你注意过光线是怎样被赋予颜色的吗？

麻省理工公开课 - 固态化学导论课程节选

and she's now playing some pretty fairly difficult things considering that she has only taken for a couple of years. So,

尽管她才学了几年，她现在已经可以弹奏比较难的曲目了。所以，

和钢琴老师 - SpeakingMax英语口语达人

We love playing together and playing for each other, and that was rightfully rewarded.

BBC: SPORT | Rugby Union | Six Nations | Don't stop celebrations - Thomas

He's playing slow, he's playing from the baseline, he's not putting so much pressure.

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Playing in those matches is 10 times harder than playing in the Carling Cup.

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