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In order to maximize global welfare, every country's carbon pricing should reflect not only the purely domestic damage from emissions, but also the damage to foreign countries.
出自-2017年6月阅读原文
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Although calls to share data often concentrate on the moral advantages of sharing, the practice is not purely altruistic ( ' , 利他的).
出自-2017年6月阅读原文
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A snack bar producer discovered that the supply of purely grass-fed Bison met was scarce.
2019年12月六级真题（第三套）阅读 Section B
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Although calls to share data often concentrate on the moral advantages of sharing, the practice is not purely altruistic.
2017年6月六级真题（第一套）阅读 Section C
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Some researchers have suggested that thoughts cannot properly be seen as purely internal.
2018年12月六级真题（第一套）听力 Section C