欧盟承诺到2020年前减排20%，如果其他国家减排30%，那么欧盟也会照办，可是难产的美国法案仅规定2020年比1990年的排放水平减少4%。

The E.U. has pledged a 20% cut by 2020 (30% if other nations make similar promises), but the pending U.S. legislation would reduce emissions only 4% below 1990 levels by 2020.

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沃尔什会说：“12年前，国际航空减排未被列入京都议定书里。”

Walsh will say: "International aviation emissions were not included in the Kyoto protocol 12 years ago."

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俄罗斯认为，在没有提出一个新的林木计算方法前，它只能在总体上减排15%，与之形成鲜明对照的是，在哥本哈根会议上其承诺将减排30%。

Russia said that without new forestry accounting methods it would only be able to cut overall emissions by 15%, as opposed to the 30% conditional pledge it made at Copenhagen.

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