wadi

詳細解釋：

wadi 也作 wa.dy

n.（名詞）
【複數】 wa.dis 也作 wa.dies

A valley, gully, or streambed in northern Africa and southwest Asia that remains dry except during the rainy season.
旱谷（乾河床）：北非或西南非的山谷、峽谷或河床，除雨季外一直保持乾涸
A stream that flows through such a channel.
流經乾谷的溪流
An oasis.
（沙漠中的）綠洲

來源：
Arabic w3do
阿拉伯語 w3do