根据各国的能源消耗数据，科学家估算出全球的CO2排放量比2009年下降了1.3个百分点。

Based on energy consumption statistics from various nations, scientists estimate that global CO2 emissions dropped by 1.3 percent in 2009.

youdao

根据各种非燃煤大气汞排放源的活动水平和排放因子，估算了1995 ~ 2003年中国分省非燃煤大气汞的排放量。

Based on the activity level and emission factors, we estimated the provincial mercury emissions from non-coal sources during the period of 1995 ~ 2003 in China.

youdao