ambient 大氣

ambient
繁：大氣
简：大气

《2014年施政綱領》中提到，環境局將與廣東省及澳門合作，啟動珠三角區域大氣細顆粒物研究，以及優化珠三角空氣監測網路。

中港聯手抗霧霾 珠三角入手（2014年1月28日）。經濟日報，取自 http://paper.hket.com/article/163912/中港聯手抗霧霾%20珠三角入手

And while ambient concentrations of hazardous ozone fell for the second consecutive year, they are proving stubbornly hard to cut having increased 15 per cent since 1999.

Hong Kong enjoys a breath of fresh air but it’s not enough to meet annual quality goals. (2017, January 5). South China Morning Post. Retrieved from http://www.scmp.com/news/hong-kong/health-environment/article/2059691/hong-kong-enjoys-breath-fresh-air-its-not-enough