When other greenhouse gases such as methane are included, the total level in the atmosphere, known as the carbondioxideequivalent, is closer to 440ppm.
如果把其它和二氧化碳有相同效果的温室气体,例如甲烷,也算在内的话,总含量将接近440ppm。
3
Replacing two days' servings of red meat with poultry will reduce emissions by more than 70 million metric tons of carbondioxideequivalent (MMtCO2e) in 2020.