详细解释:n. 矛尖, 先锋队, 先头部队
vt. 做先锋, 带头
词型变化：
动词过去式:spearheaded过去分词:spearheaded现在分词:spearheading第三人称单数:spearheads英语解释：
名词 spearhead:
someone who leads or initiates an activity (attack or campaign etc.)the leading military unit in an attackthe head and sharpened point of a spear同义词：spearpoint, spear-point