Sent_en: 2zh Its policy director David Doniger expects most difficulties to come at the end of the UNCCC, when Barack Obama and Wen Jiabao arrive at the summit: "It’s really come down to a set of difficult "
Sent_yy: 据该委员会的政策总监戴维·多尼格估计，最大的难题会在联合国气候变化大会结束的时候出现，即当巴拉克·奥巴马和温家宝来到首脑会议的时候：“一系列真正的难题会显现出来”。