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Chinese dictionary
n.metadaring vanguard; one who is eager to take the lead in doing something
当急先锋
serve as the vanguard
作为技术革新急先锋
be in the vanguard of technological innovation
资源保护运动急先锋
a leading protagonist of the conservation movement
英国人和美国人是悲观主义的急先锋。
Brits and Americans were in the vanguard of the gloomsters.