您要查找的是不是：
- ambient pollution burden 环境污染负荷
- During the combustion process of coal, the nitrogen element in coal may turn to various oxides of nitrogen, thereby, resulting in ambient pollution. 煤中氮元素在煤燃烧过程中会转化为各种氮的氧化物,从而造成环境污染。
- For geographic areas in which ambient pollutant levels are substantially below those prescribed by NAAQSs, the 1977 amendments asserted a congressional commitment to the principle of prevention of significant deterioration (PSD). 对那些大气污染物的浓度水平远低于《全国环境空气质量标准》的地理区域，1977年的修正案维护了国会防止显著恶化原则的责任。
- He wasn't rid of the mental burden. 他摆脱不了精神负担。
- I don't want to burden you with my problem. 我不想让我的问题给你添麻烦。
- Primary research on indoor air concentration of particulate matter in residential house and its relationship with ambient pollution level 住宅室内空气颗粒物污染状况及其与大气浓度关系的初探
- Don't burden yourself with unnecessary problems. 勿为不必要的问题所累。
- We should use anthracite to avoid air pollution. 我们应该使用无烟煤以防止空气污染。
- A load or burden that is too full or heavy. 超载过量或过重的载荷或负担
- Pollution control has cleared the air. 污染管制已净化了空气。
- An oppressive or nightmarish burden. 沉重的或梦魇般的重担
- He was at last shot of the burden. 他终於去掉了这个包袱。
- The old man bent with a heavy burden on his back. 老人因背著重负而弯腰。
- Man is fighting a battle against pollution. 人类正在与污染作斗争。
- Pollution is still very much a live issue. 污染现象仍然是当前的大问题。
- Ambient air pollution and atherosclerosis in Los Angeles. 洛杉矶周围的空气污染与动脉粥样硬化。
- The soil becomes more and more acidic as pollution mounts up. 随着污染的加剧，土壤的酸化越来越严重。
- A clamor in the press for pollution control. 在报纸上对污染控制的呼吁
- I've become just a beast of burden instead of a wife to him. 我成了为他干活的牲口，而不是他的妻子。
- Water pollution imperils all kinds of marine life. 水质污染危及所有海洋生物。
