spearhead
verb [ T ] uk/ˈspɪə.hed/ us/ˈspɪr.hed/
领导（攻击、行动等）；充当…的先锋；带头做
to lead something such as an attack or a course of action
British troops spearheaded the invasion. 英军充当入侵的先锋。
Joe Walker will be spearheading our new marketing initiative. 乔‧沃克将会负责推行我们新的营销计划。
spearhead
noun [ C usually singular ] uk/ˈspɪə.hed/ us/ˈspɪr.hed/
先锋；先头部队
a person or group that leads something such as an attack or a course of action
American troops formed the spearhead of the attack. 美军是进攻的先头部队。