One study comparing sole and joint custody showed that neither the type of custody nor the frequency of visitation with the non-custodial parent had an effect on the child's adjustment.

一个将单亲监护权与共同监护权做比较的研究表明，监护权的形式和没有监护权的家长的不定期探访，都不会对孩子的适应产生影响。

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The study involved experiments conducted on four jungle crows, the type most commonly found in Japanese cities and often regarded as an urban nuisance due to their booming population.

他们对丛林中四只乌鸦进行了试验研究。这四只乌鸦都是日本城市经常看见的品种，由于繁殖过快，常常看作是城市祸害。

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The solution, by virtue of the products that it is built on top of, lets you study how these metrics relate to each other, and what type of influence they may have on the carbon footprint.

这个解决方案构建在其他产品之上，因此允许您研究这些指标与其他指标的关系，以及它们对碳轨迹有什么影响。

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Is there somewhat of a study or some type of assessment on the psychological costs on the soldiers to go into combat again and the possibility to do more combat?

WHITEHOUSE: Press Briefing

Scientists have known for a long time that aerosols cool climate by reflecting sunlight and making clouds brighter, but the new study is the first to use a global model to estimate the net effects on plant carbon intake resulting from this type of atmospheric pollution.

CNN: Study: Pollution helps plants absorb C02

They are concentrating on a study of stable isotopes - atoms of the same type but with different masses - and trace elements in the birds' feathers.

BBC: Feathers clue to warbler's travels