Groundwater commonly collects in stream drainages but may remain entirely beneath the surface of dry stream-beds in arid regions.

地下水通常聚集在河流流域，但在干旱地区，地下水也可能完全保留在干涸河床的表面之下。

youdao

Underground water resources, or oases, sufficient to support irrigated agriculture are found in dry stream beds and depressions.

在干河床和洼地处可找到充足的地下水资源或者绿洲来支持灌溉农业。

youdao

In the centre of Tafraoute, sheep make their way up a dry stream bed.

BBC: In search of a lost Moroccan oasis

It was the first summer I was in business, and the dry desert heat of my hometown came on strong, bringing a steady stream of customers through the door looking for ice-cold smoothies and air-conditioned relief from the scorching sun outside.

FORBES: Hard Lessons In The Life Of A Young Entrepreneur: The? Phone Call That Changed Everything

Lisbon, Portugal, which is located in the path of the Gulf Stream, averages the most daily hours of sunlight year-round thanks to its dry air and stable climate (much like southern California in the U.S.).

FORBES: Magazine Article