They do, though, have other proteins, called Fc receptors.

他们表面有的是另外一种被称为Fc受体的蛋白。

Sao Paulo Fc players once walked out with dogs to raise awareness to the stray dog problems plaguing the city.

圣保罗足球俱乐部的球员曾带着狗出场，以提高人们对困扰城市的流浪狗问题的认识。