Sometimes primary group relationships evolve out of secondary group relationships.

有时主要的群体关系从次要的群体关系演变而来。

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Third, the probability that we will develop primary group bonds increases as we have frequent and continuous contact.

第三，当我们有频繁和持续的接触时，主要群体凝聚力增强的可能性也增加了。

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A primary group involves two or more people who enjoy a direct, intimate, cohesive relationship with one another.

一个基本群体包括两个或以上的人，彼此之间有直接、亲密、紧密的关系。

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In addition to Texas with its large Latino population -- a group she has done well with this primary season -- Clinton is also banking on winning Ohio and its blue-collar voters, another group that has backed her in previous primaries and caucuses.

CNN: Obama faces fire from Clinton, McCain

The Trust said it had worked closely with the hospital and the Clinical Commissioning Group - the group of GPs who have taken over the running of the local primary care trust - to resolve the issue.

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In Worldreader's first test, funded by the U.S. Agency for International Development at six schools in Ghana starting in 2010, the group found that primary-school students who got Kindles increased their performance on standardized reading tests from about 13% to 16%.

WSJ: Worldreader: An E-Book Revolution for Africa?