China and the US have begun an ambitious new phase of talks on curbing their carbon dioxide emissions that observers say is the most promising development in nearly 20 years of global climate change negotiations.
美中兩國有關抑制各自二氧化碳排放的談判已進入一個雄心勃勃的新階段,觀察人士認爲,這是近20年全球氣候變化談判裏讓人感到希望最大的變化。
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