translation.en: And my kids, from the poorest congressional district in America, became the first to install a green wall, designed by a computer, with real-live learning tools, 21 stories up -- if you're going to go visit it, it's on top of the John Hancock building.
translation.zh: 我的学生们，虽然他们来自美国最穷的地方， 却成了第一批竖起这座绿色之墙的人 这堵墙由计算机设计，还能用到现实生活中的各种工具， 足足有21层楼这么高。如果你乐意来参观的话， 它就位于约翰-汉考克大楼楼顶。