1、先行者
... 先行任务 predecessor task; 先行者 foregoer; forthgoer; forerunner; 先行主语 {语} anticipatory subject ...
2、带头人
...带头 take the lead带头人 foregoer带头冲锋 lead the charge ...
3、先驱
先驱 pioneer; forerunner; foregoer; harbinger; precursor; predecessor; progenitor; ..