I am a real estate broker.

我是一名房产经纪人。

I'm a real estate broker.

我是不动产经纪人。

Think about how anonymous the typical real estate broker is.

想想典型的房地产经纪人匿名到什么程度。

A qualified real estate broker who works with or for another broker.

与其他经纪人一起或为其他经纪人工作的合格的房地产经纪人。

He shopped with a real estate broker who owns no property of her own.

他是通过一位房地产经纪人来购买的，而这位经纪人却并未拥有属于他自己的房产。