if a situation is no joke, it is very serious or very difficult.
There are two of us here, trying to do the work of four people - it's no joke.
英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。