translation.en: And the students were right. It wasn't that the world consisted -- the world consisted here, of one set of countries over here, which had large families and short life. Developing world.
translation.zh: 学生们是对的。这不是世界所包括的-- 世界所包括的在这里，一组在这里的国家， 他们有较大的家庭和较短的寿命。发展中国家。