这些先前的研究都审查了不同的环境、社会和地理变量与某一地点所发现的语言数目之间的关系。

These prior efforts all examined the degree to which different environmental, social and geographic variables correlated with the number of languages found in a given location.

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这些先前的研究都考察了不同的环境、社会和地理变量与在特定地点发现的多种语言之间的关联程度。

These prior efforts all examine the degree to which different environmental, social, and geographic variables correlated with a number of languages found in a given location.

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上学期，我参加了地理小组的研究性学习。我们研究的课题是：环境污染与环境保护。

Last term I took part in a geography research study group. Our topic was environmental pollution and protection.

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