There was no doubt he was serious, it wasn't just playing around.

无疑，他是认真的，而不是在闹着玩。

《柯林斯英汉双解大词典》

Given a couple of lessons, I should be stumbling gracelessly around the golf course and playing badly in no time at all.

稍微学几次，我应该立刻就可以上高尔夫球场打上那么一场了。

youdao

Have you ever heard a song when none was playing, clearly seen someone’s face when no one was there or felt the presence of a person, only to turn around to an empty room?

你是否有过这样的经历？ 突然听到一首歌，但根本没人在演奏；眼前清楚浮现某人的脸，实际上他根本不在那儿；甚或感觉某人的存在，转身却发现房间空无一人？

youdao

Ms. SAMUELS: No, I think that 50 has already sort of done a lot of playing around with his album as it is.

NPR: Lifestyle & Trends: Kanye West, 50 Cent Do Battle

In May, after a few months of sitting around and playing cards and whatnot, a juror decided she could no longer wait and sent a note saying she had to get back to Siberia.

FORBES: Jury Still Out on Russia's Jury System