translation.en: Due to our release, through factories and automobiles every year, of more than six billion tons of carbon dioxide -- which helps air absorb heat from the sun -- our atmosphere seems to be getting warmer.
translation.zh: 每一年，工厂以及汽车尾气所排出的CO2 总数为60亿吨 这就使得大气更多的吸收来自太阳的热量 我们的大气层也因而正变得温暖起来