大幅度下降用英语怎么说？

大幅度下降

例句

• There has been a sharp decline in profits this year. 今年的利润大幅度下降。
• A catastrophic fall in tourism in the Olympic year is also overshadowing optimism. 游客数量的大幅度下降也给原本乐观的前景蒙上了一层阴影.
• A catastrophic fall in tourism in Olympic year is also overshadowing optimism. 雅典奥运会年期间,游客数量的大幅度下降也给原本乐观的前景蒙上了一层阴影.
• The output of some export crops, notably cashews, cotton, and pyrethrum, fell drastically. 有几种出口农作物, 特别是腰果 、 棉花和除虫菊的产量大幅度下降.
• The impoverished population is shrinking substantially and the impoverishment rate is decreasing sharply. 贫困人口大幅度减少,贫困发生率大幅度下降.