To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.
防止取样的偏颇,他们将分析的对象限制在一类石记录保存完备动物——双壳类软体动物。
To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.
防止取样的偏颇,他们将分析的对象限制在一类石记录保存完备动物——双壳类软体动物。
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