People have cooked over open fires and dirty stoves for all of human history, but the simple fact is they are slowly killing millions of people and polluting the environment. Engineers and development professionals have worked on this problem for decades. My own involvement stretches back many years, and I’m well aware that well-meaning efforts have been launched, but none have managed to match the scope of the challenge.
参考答案:在整个人类历史进程中,人们一直在用明火或高污染厨灶做饭,但一个明确的事实是,厨灶正在导致千百万人慢性死亡,同时还在污染环境。工程师和开发专业人员几十年来一直在努力解决这个问题。我自己参与其中也有很多年了。据我了解,人们已经作出一些良好的努力,但这些努力不足以应对这一挑战的规模。