罪魁祸首

zuìkuíhuòshǒu

HSK 7

罪魁祸首 — zuìkuíhuòshǒu

1. criminal ringleader; main offender; chief culprit; principal cause of a disaster

   过度使用化肥是这次水质污染事件的罪魁祸首。 guòdù shǐyòng huàféi shì zhècì shuǐzhì wūrǎn shìjiàn de zuìkuíhuòshǒu — Excessive use of fertilizers is the chief culprit behind this water pollution incident.