因为目前的承诺不足以将全球气温升高幅度限制在巴黎协定的“大大低于两摄氏度”的目标之内，联合国将在2018年举行特别对话，鼓励各国在2020年前做出更加宏大的承诺。
Because the current set of pledges is inadequate to limit the rise in global temperature to the Paris accord’s target of “well below two degrees Celsius,” the United Nations will hold a special dialogue in 2018 to encourage countries to submit more ambitious pledges before 2020.