First of all, developed nations should make explicit commitment on the emission reduction targets of the second commitment period of the Kyoto Protocol and make progress in that respect.

首先，发达国家应该就其对于《京都议定书》第二承诺期的减排指标作出明确承诺，取得积极进展。

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The current five-year plan, which contains few other numerical targets, envisages a 10% reduction in concentrations of the worst air pollutants and a 20% increase in energy efficiency over the period.

现行的五年计划，其包括的数字目标没有几个，设想这期间最差的空气污染物的浓度减少10％，能源效率增长20％。

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In theory, it has a compliance mechanism: countries that fail to meet their targets in one period will be expected to make even bigger cuts in the next.

理论上，它有一套遵循机制：一定时期内不能达成减排目标的国家，下一个时期的减排任务将更大。

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He made his comments while giving evidence to the Commons Environmental Audit Committee's inquiry into how the UN Kyoto Protocol will progress after the current period for emission targets ends in 2012.

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Hopefully, economic growth during this period will make these targets easier to achieve because of increased revenue.

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In theory, it has a compliance mechanism: countries that fail to meet their targets in one period will be expected to make even bigger cuts in the next.

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