translation.en: And the second ingredient, which would solve mobility, that very difficult challenge in developing countries, in a very low-cost and simple way, would be to have hundreds of kilometers of streets only for buses, buses and bicycles and pedestrians.
translation.zh: 第二要素将解决流动性的问题 在发展中国家，这非常艰难的挑战 一个成本非常低且简单易行的方法是 将数百公里的道路 打造成专用道，巴士专用道 公交车专用道、自行车专用道和人行道