西北干旱地带农业区的灌溉水入渗是地下水补给的重要途径。
The seepage of irrigation water is an important source of groundwater in the irrigated farm region of arid area Northwest China.
除了热带雨林和干旱地带之外，许多其它东西都有着这样的性质。
Many things other than rainforests or drylands share these attributes.
撒哈拉、阿拉伯、伊朗和塔尔沙漠相互连接，形成6千英里宽的北非干旱地带。
The Sahara, Arabian, Iranian, and Thar deserts all connect together to form a 6, 000-mile (9, 600-kilometer) expanse of drylands in North Africa.
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