乔治在其最近出版的《真北团队》(True North Groups)一书中指出，美国人的社交活动越来越少。
Americans have become less social, George argues in his recently published book True North Groups.
出版是一种信息传播活动。
Publication is a kind of information communication campaign.
出版是一种信息传播活动。
Publication is a kind of information communication campaign.
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