比喻做事时畏难退缩 [be a pioneer;be vanguard] 领头做事 [obelize;put a question mark;put a querry] 用一个疑问符号标明或注明,尤指标明 [某处] 是有疑问的或假的 ..
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打先锋 fight in the van; be a pioneer; lead the way; lead the van 急先锋 daring vanguard 充当急先锋 serve as the vanguard .
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