spearhead

spearhead n.

先頭部隊

v.

充當先鋒

英英解釋:名詞spearhead:
1. someone who leads or initiates an activity (attack or campaign etc.)
2. the leading military unit in an attack
3. the head and sharpened point of a spear
同義詞：spearpoint, spear-point
動詞spearhead:
1. be the leader of