pros
A pro is a professional.
In the professional theatre, there is a tremendous need to prove that you're a pro.
在专业剧院里,很有必要证明自己是个专业人士。
pros and cons
The pros and cons of something are its advantages and disadvantages, which you consider carefully so that you can make a sensible decision.
Motherhood has both its pros and cons.
做母亲有利也有弊。
If you are pro a particular course of action or belief, you agree with it or support it.
Americans have always been very pro business, pro competition, pro free market.
美国人一向很支持商业、竞争和自由市场。