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Từ điển Oxford Advanced Learner 8th
stand fast
▪ I. stand ˈfast/ˈfirm idiom to refuse to move back; to refuse to change your opinions Main entry: ↑fastidiom ▪ II. stand ˈfast/ˈfirm idiom to refuse to move back; to refuse to change your opinions Main entry: ↑firmidiom
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