世界能够日益将援助集中于主要环境问题 — — 室内和室外空气污染以及铅和臭氧污染 — — 几乎所有与环境有关的死亡都是由这些问题造成的。
The world can increasingly focus aid on the main environmental problems – indoor and outdoor air pollution, along with lead and ozone pollution – that cause almost all environment-related deaths.