As President Barack Obama took the stage at the Apec business leaders summit in Beijing, excitement rippled through the crowd and the packed room transformed into a sea of glowing smartphone screens.
当美国总统巴拉克•奥巴马(Barack Obama)登上在北京举行的亚太经合组织(APEC)工商领导人峰会的讲台时，人群顿时轰动，座无虚席的会议厅变成一片发光的智能手机屏幕的海洋。
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