To pick on someone means to bully them or be mean or cruel to them.

“Pick on”某人的意思是欺负他们，或者是对他们很刻薄很残忍。

Have you heard of the expression 'pick on someone your own size? '

你听过“不要以大欺小”这个表达吗？

Raise your hand, and the teacher will think you know the answer, so they'll pick on someone else. Reverse psychology.

举手，这样老师就会认为你知道答案，那他们就会叫其他人回答问题。这是逆向心理法。

You told them to go pick on someone their own size.

你又告诉他们 有本事找个跟他们个头差不多的打。

Why don’t you pick on someone else for a change?

【pick】你为什么不换个人刁难刁难？

" Why don't you pick on someone your own size, you brainless brutes" ?

" 你们这些愚蠢的畜生，为什么不找一个和你们个子相仿的人呢？"