Kungfu Panda,《功夫熊猫1》

The air-conditioner has broken down from time to time. Please do something about it. It's so hot here.

那台空调三天两头地出毛病。快想想办法吧。这里太热了。

I already asked a guy to come over later today to fix it. Don't worry.

我已经让人晚些时候来修了。

重点讲解:

The air-conditioner stops working every two or three days.

The air-conditioner has broken down from time to time.

如果你跟老外说The air—conditioner stops working every two or three days.来形容“空调三天两头出毛病”，老外肯定不知道你在说什么，但是更地道的说法 是The air—conditioner has broken down from time to time, don't work和break down 都可以表示“不工作，坏了”，短语from time to time就是“时不时地”。