China has made an “opening play” ahead of the UN climate summit by pledging to track and reduce harmful emissions from methane, as the world’s largest producer of the potent global warming gas.
中國在聯合國氣候峰會前打響“頭炮”，承諾追蹤并減少有害的甲烷排放。中國是這種強效溫室氣體的全球最大排放國。
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