干旱
drought; arid; dry; aridity
例句：
1、干旱期间庄稼都枯死了。
The crops died during the drought.
2、几百万人因干旱和歉收而受到饥饿的威胁。
Millions of people are threatened with starvation as a result of drought and poor harvests.
3、长时间干旱，水源都枯竭了。
The long drought dried up the source.
4、在一些干旱地带存在严重的土地退化问题。
There are serious problems of land degradation in some arid zones.