aridity

例句：

1. 1. The deserted town was once a thriving community.
   这个被遗弃的小镇曾经是一个繁荣的社区。
2. 2.The farmers have to deal with the harsh desert conditions.
   农民们不得不面对严酷的沙漠条件。
3. 3.The dry season is when the desert becomes more apparent.
   干季时，沙漠变得更加明显。