Emissions of carbon dioxide, methane and other greenhouse gases driving up global temperatures need to be cut by nearly half by 2030, less than a decade.

二氧化碳、甲烷和其他导致全球气温上升的温室气体的排放需要在不到十年的时间内，到2030年减少近一半。

If all road vehicles were electric, we'd be able to wipe out about 18% of all CO2 emissions, the most prominent greenhouse gas driving climate change.

如果所有的道路车辆都是电动的，我们就能减少 18% 的二氧化碳排放，而二氧化碳就是导致气候变化的最主要的温室气体。