Mass transit projects, electric car recharging stations, infill construction, city agriculture, clean power generation — all these actions earned carbon coins at the city level.

公共交通、动汽车充站、填充式建筑、市农业、清洁发——这些都为市挣得了碳币。

The houses allow students the experience of working with a client and the opportunity to respond to the challenges of affordable housing and urban infill.

这些房子让学生得到与客的体验，并使他们有机会回应经济适用房和市提出的挑战。