nosedive

1.急剧下降；急转直下；暴跌a sudden steep fall or drop; a situation where sth suddenly becomes worse or begins to fail

1.[i]骤降；急剧下跌；暴跌to fall suddenly

1.俯冲

1.if an amount or value nosedives, it suddenly becomes much lower

2.if something nosedives, it suddenly becomes a lot less successful

1.a sudden reduction in prices, profits, etc.; a sudden end to success

2.an occasion when an airplane suddenly falls out of the sky with its nose pointing down