人口急剧下降/减少。
The population fell rapidly/dwindled/shrank.
权威词典这种产品的质量急剧下滑。
The quality of the product deteriorated rapidly.
权威词典情况急剧恶化。
Matters went rapidly from bad to worse. / Matters were deteriorating drastically.
权威词典地皮急剧升值。
The land has rapidly appreciated.
权威词典形势急剧恶化。
Things worsened rapidly.
权威词典
