约翰斯·霍普金斯大学的莫洛·马瑞里和李朝阳正在尝试这样做。
And that is what Mauro Marrelli and Chaoyang li of Johns Hopkins University are trying to do.
东城区一小队的交通警察说他们半夜在朝阳门天桥截住李。
A squad of traffic police from Dongcheng District said they stopped li at the Chaoyangmen Overpass at midnight.
北京市朝阳疾病预防控制中心艾滋病项目负责人李东亮说，这一传染性疾病现在开始逐渐蔓延起来。
'the epidemic is starting to generalize,' says li Dongliang, a district director of the AIDS program of the Center for Disease Control and Prevention in Beijing.
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