I can't play—I've got a dodgy knee.

我不能玩了—我的膝盖出了毛病。

《牛津词典》

We can't play in a messy room.

我们不能在一个乱糟糟的房间里玩耍。

youdao

If you can't play straight, then say so.

如果你不能做到诚实坦率，那就直说。

《柯林斯英汉双解大词典》

And so if you are a bit of a geek and would like to play net/aces with this you can go to cs50.net/aces and I don't think Willie will give it to you to keep but you can borrow and play for some amount of time in exchange for some feedback on it.

所以，如果你有兴趣并想玩玩这个,那么你可以访问cs50。,但是我觉得Willie不会让你保管它,你可以去借，然后玩一段时间，但作为交换条件,你需要反馈一些意见。

哈佛公开课 - 计算机科学课程节选

or on whatever else they play on. I can't remember what they play on.

或者在其他什么地方。我记不得他们还在什么上面比赛了。

世界级网球比赛 - SpeakingMax英语口语达人

It's tough when you can't play at 100% in a very important tournament like this.

BBC: Nadal limps past wildcard Jones

But it seems the Yankees can't play a day without an injury this year.

WSJ: Pettitte stumbles again as Yanks lose to A's 5-4

Campbell's best player, guard Charlie Aini, can't play on weekends because of the Jewish Sabbath.

WSJ: Tony Campbell and Bay Ridge Basketball: High-Five the Guy Who Just Dunked on You