这些城市中的难民只能栖身于拥挤的贫民窟或棚户区，很少甚至根本无法享有医疗保健和社会服务。
Forced to live in overcrowded slums or shantytowns, city-dwelling refugees have little or no access to health care or social services.
邮报于一月份发表的一份报道称，华盛顿特区内提供社会福利及其他援助措施的数家服务中心异常拥挤，有些申请者甚至要等待数日才能得到救助。
A Post story in January reported that D.C. service centers that process welfare and other aid applications were so crowded that some applicants had to wait for days to try to get assistance.
对于社会网络研究的关注有助于解释我为什么现在坐在拥挤的会议室里，学习Excel软件的扩展功能。
This emphasis on social network studies helps explain why I’m currently sitting in a packed conference room, learning about an extension to Excel.
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