Archaeologists know that mounds such as these are the kinds of geological features that indicate the presence of ancient settlements.

考古学家知道，像这样的土堆是能表明有古代定居点存在的地质特征。

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Yan 'an City, which is situated near to hills and beside rivers, has its special geological features.

延安市是一座依山傍水的河谷城市，有着特殊的地形特点。

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Based on practical data, this paper deals with geological features and ore-stone quality of the high-Fe type bauxite.

文中以实际资料论述了高铁型铝土矿的地质特征和矿石质量。

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Ride's educational company supplied the cameras on the mission that allowed students to take their own pictures of craters and other geological features.

NPR: NASA Moon Craft Spots Ebb And Flow Crash Sites

Scientists have previously established the existence of water on Mars in the form of ice at the poles and water vapor, and pointed to geological features that appear to have been carved by water ages ago.

CNN: Life on Mars?

"I firmly believe that should future generations of geologists come back, they will identify these features as pervasive in the geological sense, " says Professor Wolfe.

BBC: Leaving our mark: Fossils of the future