1.A dog's dinner or dog's breakfast – to make a mess.

搞砸了

例句：They made a real dog's dinner of the website. It's terrible.

他们把网站搞砸了。这可太糟了。

2. To fight like cats and dogs - to argue and fight with someone.

和某人争吵

例句：It's a miracle how Sally and John manage this company. They're always fighting like cats and dogs.

萨利和约翰能共同管理公司真是个奇迹。他们总是吵得不可开交。