hungry dogs will eat dirty puddings字面意思是饿狗会吃脏的布丁，引申为饥不择食。

【例句】

I don't have choice! Hungry dogs will eat dirty puddings!
我没得选！只能饥不择食了！
 

When you are starving you will realize hungry dogs will eat dirty puddings.
等你饿了，你就知道什么是饥不择食了。