The concentration of carbon dioxide in the atmosphere is rising and climate change is occurring, both due to human actions...
大气中的二氧化碳浓度正在上升，气候变化正在发生，这些都缘于人类活动…。
2
These particles bring with them many gigawatts of power that Dr Wong wants to harness to reduce the concentration of greenhouse gases in the atmosphere.
这些微粒携带数十亿瓦特的电力，王博士希望利用这种力量来降低大气中温室气体的浓度。
3
Nordhaus's preferred policy, for example, would stabilize the concentration of carbon dioxide in the atmosphere at a level about twice its preindustrial average.