我认为他就是喜欢挑起麻烦。

I think he just likes to ___stir ___up trouble.

她童年艰难，总是挑起麻烦。

She had a rough childhood and was constantly ___stirring ___up trouble.

他试图在两个部门之间挑起冲突。

He tried to ___stir ___up conflict between the two departments.