positive的名词是Positive

positive

adj.积极乐观的;自信的;积极的;建设性的;朝着成功的;表示赞同的;拥护的

n.优势;优点;正片;阳性结果(或反应)

复数： positives

That this is a positive stereotype makes it no less a stereotype, and therefore unacceptable.

这种成见即使是积极的也依然是成见，因而是不可取的。

The agreement should have very positive results in the long term

从长远来看，这个协议将会产生非常积极的影响。

His family have been a very positive influence on him.

他的家庭对他有十分良好的影响。