该报告是四年来首次对《保护臭氧层维也纳公约》和《蒙特利尔议定书》的全面更新。
The report is the first comprehensive update in four years on the Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol.
30年前,国际社会签署了《保护臭氧层维也纳公约》。
Thirty years ago, the international community signed the Vienna Convention for the Protection of the Ozone Layer.
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