Keep running and playing balls.

坚持跑步，打球。

youdao

I like playing balls.

我喜欢玩球。

youdao

He enjoys playing balls.

他喜欢打球。

youdao

I started playing when I was about nine, hitting balls with my brother and my dad.

我大概九岁的时候开始打，跟我哥哥和爸爸打。

高尔夫俱乐部的回忆 - SpeakingMax英语口语达人

True, in bowling reverse swing from round the wicket, Pakistan left-armer Mohammad Amir did make life awkward in that right-handed batsmen can easily be drawn into playing at balls that they should be leaving.

BBC: Jonathan Agnew column

Despite a snail-like start he had struck 115 off a total of 136 balls playing genuine cricket shots throughout.

BBC: Solanki finds new maturity

Clarke was shockingly booed by his home supporters when playing out dot balls, but with the required run-rate approaching eight an over, Watson smashed Yardy for consecutive leg-side sixes en route to his highest ODI score to relieve the pressure.

BBC: Shane Watson century too much for England in Melbourne