Beijing Ground, CES5132, request time check.
北京地面，时间2点整。
Gaining height, he saw Beijing like a relief map on the ground below him.
飞机升高以后，他看北京就像在他下面的一张地势图。
Ground water is among the most important resources in Beijing.
地下水是北京市最重要的资源之一。
Ground water is among the most important resources in Beijing.
地下水是北京市最重要的资源之一。
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