I'm not playing. I'm studying.

我没有在玩，我在学习。

youdao

I'm not playing games.

我不是在玩游戏。

youdao

I took a lot of flack for not playing up to expectations.

我因为没有达到预期希望而成为众矢之的。

《柯林斯英汉双解大词典》

It shows four people playing cards, and one person is not playing fairly.

VOA: special.2010.06.23

If you assume that, you are not playing by the rule, we don't know what force it exerts.

如果你假定了,那你就犯规了,我们不知道它施加了多大的力

耶鲁公开课 - 基础物理课程节选

Let's say oftentimes orchestral musicians, they're sitting there and they're not playing so they have to be able to count for a long period of time.

时常,管弦乐团的乐手们坐在那里,却不需要演奏,因此他们不得不打很长一段时间的拍子

耶鲁公开课 - 聆听音乐课程节选

Who was the last Englishman to represent his country whilst not playing for a first-class county?

BBC: Stump The Bearded Wonder No 28

"We try and support other teams when the Czechs are not playing, " said Kokes.

BBC: Czech fans look to history

Despite not playing for the Jets, Garrard could still potentially be around the team this summer.

WSJ: Garrard says knee forced him to consider retiring