世界卫生组织估计，他们当中许多人使用的炉子会产生很多烟，其中的微粒污染物每年都会导致近200万人提前死亡。
The smoky stoves that many of them use, the World Health Organisation reckons, produce particulate pollution that causes around 2m premature deaths a year.
该机器是由一家位于旧金山叫‘银辉’的研究研究组织所开发，可把海水变成极小微粒，再喷向3000多英尺的空中。
The machines, developed by a San Francisco-based research group called Silver Lining, turn seawater into tiny particles that can be shot up over 3, 000 feet in the air.
世界气象组织的科学家对地面臭氧、烟雾、空气悬浮微粒子、二氧化硫、一氧化碳之类的污染物质进行评估监测。
WMO scientists assess and monitor air pollutants such as ground-level ozone, smog, particulate matter, sulfur dioxide and carbon monoxide.
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