One possible explanation is social isolation-we tend to do more things on our own and engage in fewer group activities than we used to.

一种可能的解释是社会孤立——我们更喜欢在独自一人时做更多的事情，而比以前更少参加集体活动。

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Testing professionals came to speak, discuss, participate in workshops, and engage in social activities-all related to software testing and quality.

专业测试人员在会议中发言、讨论，并参与到工作室，以及其他社区活动——所有这些都与软件测试有关。

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Article 7 the land user shall abide by provisions of laws and regulations to develop, utilize and manage the land and shall not engage in any activities detrimental to the social public interests.

第七条土地使用者开发、利用、经营土地的活动，应当遵守法律、法规的规定，不得损害社会公共利益。

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Consider a study that came out from Performics late last year, which found that men are more likely than women to engage in many types of social shopping activities.

FORBES: 'The Hunger Games' and Its Sleeper Fan Base of Men

States not only employ some 4.7m people directly, but engage in a range of activities from waste-disposal to the provision of social services to business regulation covered by federal legislation.

ECONOMIST: The Supreme Court