if it's not one thing, it's another 

saying

used when bad things keep happening to you

按倒葫蘆又起瓢;問題不斷

First the power goes out, now the printer isn't working—I tell you, if it's not one thing, it's another!

先是停電了，現(xiàn)在打印機又壞了。我跟你說，不是這個壞了就是那個不行。

First I burnt my breakfast, then I crashed my car. If it's not one thing, it's the other right now. 

我先是把早餐烤焦了，然后又把車撞壞了。真是一波未平一波又起!