dust bowl
noun
1- an area of land where vegetation has been lost and soil reduced to dust and eroded, especially as a consequence of drought or unsuitable farming practice风沙侵蚀区。
1.1
the Dust Bowl
an area of Oklahoma and other prairie states of the US affected by severe soil erosion in the early 1930s, from which many people were obliged to move干旱尘暴区（指20世纪30年代初美国俄克拉何马州及其他一些受土壤侵蚀严重影响的大草原地区的州, 当时有许多人被迫迁离这些地区）。