spearhead
🇺🇸
/ˈspɪrhed/
🇬🇧
/ˈspɪəhed/
The leader or main supporter of an activity.
She was the spearhead of the effort to improve local schools.
她是改善当地学校努力的先锋。
To lead or start an activity, especially an attack or a campaign.
She will spearhead the new community project.
她将成为新社区项目的先锋。