物价出现了急剧上涨。

There has been a ___steep increase in prices.

然而，在1978年至1982年间出现了一次急剧增长，当时数字达到了约6000万吨。

However, there was a ___steep increase in 1978 to 1982 when the figure reached about 60 million tonnes.

公司宣布大幅降价以促进销售。

The company announced a ___steep price cut to boost sales.