1. plummet 暴跌
例句:In Tokyo share prices have plummeted for the sixth successive day.
在东京,股价已经是连续第6天暴跌了 。
2. critically endangered 极度濒危
例句:The Cuban crocodile, illegally hunted for its meat and skin, was moved to the critically endangered category.
古巴鳄鱼,也由于其肉和皮遭到非法猎杀,被转移到了极度濒危类 。