But this is just one, two, three billion people, and obviously there are seven billion people in the world, so there must be one, two, three, four billion people more who live in between the poverty and the air line.
但这只是10亿，20亿，30亿人口， 显然地，世界上共有70亿人口， 所以这必定是10，20，30，40亿更多的人口， 他们生活在贫困线和航空线之间。