aridity
n. 干旱；乏味
例句
The perennial vegetation adjusts to the aridity by means of various avoidance mechanisms.
多年生植物会采用各种躲避机制以适应干旱。
The nature of plant life in deserts is also highly dependent on the fact that they have to adapt to the prevailing aridity.
沙漠中的植物的性质也高度取决于这样一个事实，即它们必须适应普遍的干旱。
The trend in the Arab world leans towards aridity.
这个在阿拉伯世界的趋势将趋向于干燥。
