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Sea beach material the general upper part is thicker, pool the ascent slope is bigger;
海滩物质一般上部较粗，滩坡坡度较大；
youdao
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The material in this beach has been dated by radiocarbon.
这个海滩上的物质经过放射性碳测定。
youdao
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The material in this beach has been dated by radiocarbon.
这个海滩上的物质经过放射性碳测定。
youdao