先驱者用英语怎么说？

先驱者

• pioneer，precursor，ancestor，forerunner

例句

• This successor was J . F . McLennan, the exact opposite of hispredecessor. 这个后继人,就是约-弗-麦克伦南, 他和他的先驱者正好相反.
• First came the earliest individualistic pioneers who depended on hunting and fishing for their livelihoods. 走在最前面的是早期的个人主义先驱者,他们靠狩猎捕鱼为生.
• The Pioneer probes have on board ultraviolet instruments which are measuring light that we can't measure on the earth. “先驱者号”太空探测器上装有紫外线仪器，能够对在地球上探测不到的光进行测量。