a.

1. 干旱的；干燥的；不毛的
   The settlers irrigated the arid land.

   移民们灌溉干燥的土地。

2. 枯燥的；无生气的
   The audience soon grew tired of his arid speech.

   没多久听众对他枯燥无味的演说就感到厌腻了。

adj.

1. (of land or a climate) very dry; having little or no rain.
2. uninteresting:
   arid verse.