precipitous

adj.

险峻的；多悬崖的；急躁的；鲁莽的

1. We have a precipitous climb to the peak.
   我们向着陡峭山顶攀登。
2. Over the past 18 months,there has been a precipitous fall in car sales.
   在过去的18个月里，汽车销量急转直下。
3. They have made a precipitous decision.
   他们做出了一个急促的决定。

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