短语词组短语aridity index 燥指数;干燥度;干旱指数aridity prototype 干旱祭祀原型aridity area 干旱区aridity pump 脱水泵recurrent aridity 反复干旱aridity coefficient [气候]干燥系数;干燥系数aridity factor 干燥因子aridity boundary [气候]干燥界限aridity peak 干旱峰值 返回 aridity