N-COUNT When you are talking about a crime or something wrong that has been done, you can refer to the person who did it as the culprit. 犯罪者; 犯错者
All the men were being deported even though the real culprits in the fight have not been identified.
尽管那次斗殴事件的真凶未被确认，但那些男人都在被驱逐出境。
N-COUNT When you are talking about a problem or bad situation, you can refer to its cause as the culprit. (造成问题或麻烦的) 原因
About 10% of Japanese teenagers are overweight. Nutritionists say the main culprit is increasing reliance on Western fast food.
约10%的日本青少年都超重。营养学家们称主要的原因是他们越来越依赖西方快餐。
Police collared the culprit as he was leaving the premises.
罪犯正离开现场时，警察逮住了他。
The police followed home the clue and finally caught the culprit.
警察根据线索追根到底，终于抓住了这个罪犯。
About 10% of Japanese teenagers are overweight. Nutritionists say the main culprit is increasing reliance on Western fast food.
约10%的日本青少年都超重。营养学家们称主要的原因是他们越来越依赖西方快餐。
Morton Satin of the Salt Institute says salt,or sodium, is not really the culprit.
VOA: standard.2010.04.22
"I think the priorities are totally skewed when people start looking at stormwater when in reality they need to be looking at what is the primary biggest culprit in what their receiving waters are being degraded by."
VOA: standard.2010.08.04
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