plummet

The airline's shares plummeted after news of the technical failure spread.

(Chinese) 技术故障的消息传开后，该航空公司的股价暴跌。

Temperatures are expected to plummet below freezing tonight as the cold front arrives.

(Chinese) 随着冷空气的到来，今晚气温预计将跌至冰点以下。