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“生龙活虎”，汉语成语，意思是像很有生气的蛟龙和富有活力的猛虎（doughty as a dragon and lively as a tiger）。比喻活泼矫健、生气勃勃。可以翻译为“brimming with energy，full of vitality或full of vim and vigour”等。
例句：
这些年轻的大学生干起活来真是生龙活虎。
The young college students work with furious energy.