But while all that traffic can be good for the economy, it can come in a huge environmental cost, as waste, pollution, and an increasing number of vehicles damage the health of the region's ecosystem.

但是，尽管所有这些都有利于经济，但也会造成巨大的环境成本，垃圾、污染以及车辆数量的增加损害了该地区生态系统的健康。