名词
中文翻译：岩床
同义词：
['rock stratum', 'rock layer', 'bedrock']
例句：
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1. The geologist studied the rocksin the area to determine their age.
地质学家研究了该地区的岩石来确定它们的年龄。
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2. The construction crew used a rock bedto support the weight of the building.
建筑工人使用岩床来支撑建筑物的重量。
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3.The river flows through a rock bedthat is rich in minerals.
河流流经一个富含矿物质的岩床。