the vanguard
剑桥词典
- the part of an army or navy that leads an attack on an enemy
先头部队,先锋;尖兵
比较
rearguard
a group of people who lead the development of new ideas , or a leading position in the development of something
(思想的)先驱;领先地位
He is in the vanguard of economic reform . 他是经济改革的领头人。
也见 the forefront 返回 the vanguard