北京市环保局发布了“2014清洁空气十大关键词”，“APEC蓝”居于首位，还包括了“人努力天帮忙”、 “铁腕治污”、“源解析”、“告别黄标车”、“无煤化”、“淘汰升级”、“权威发布”、“区域共治”和“清新过年”。

The Beijing Municipal Environmental Protection Bureau has released its top key words for 2014, with the first three being "APEC blue," "Effort and luck," and "Fight pollution with an iron hand."

北京市环保局日前发布了2014清洁空气十大关键词，排名前三的分别是“APEC蓝”、“人努力天帮忙”和“铁腕治污”。

APEC blue(APEC蓝)毫无悬念地当选了第一大清洁空气关键词。“人努力天帮忙”的英文表达是Effort and luck，而“铁腕治污”的英文表达是Fight pollution with an iron hand。

其余的清洁空气关键词分别为：

No. 4. Analysis of PM2.5 sources 源解析

No. 5. Say goodbye to "yellow label cars" (heavy-polluting vehicles) 告别黄标车(重污染机动车)

No. 6. No coal 无煤化

No. 7. Elimination and industrial upgrading 淘汰升级

No. 8. Authoritative weather information release 权威发布

No. 9. Coordinated and joint efforts (Beijing, Tianjin and Hebei province have cooperated closely in the anti-pollution campaign) 协同共治(京津冀及周边地区协同共治大气污染)

No. 10. "Fresh" Spring Festival (Beijing called on residents to set off fewer or no fireworks during the lunar New Year.) 清新过年(北京呼吁市民春节少放或不放烟花)