sudden drop短语¹⁰⁶¹⁰⁰⁺⁵ 基本例句 急剧下降 Authorities believe the cause is a sudden drop in temperature. 当局认为是气温骤降造成的。 tingvoa Dinosaurs were wiped off the face of the Earth by a sudden drop in temperature and not by a comet striking the planet. 恐龙从地球上消失的原因，是因为地球温度的骤降，而非彗星撞击地球。 cri