佣金用英语是 commission。它的来源是源于拉丁语"commissio"，意思是“授权”或“委托”。例如：

He earns a commission for every sale he makes. 他每次销售都会获得佣金。

The real estate agent receives a commission for finding a buyer for the house. 房地产经纪人为房屋找到买家会获得佣金。

She negotiates a higher commission rate with her employer. 她与雇主谈判获得更高的佣金比例。