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clean air device 空气净化设备
Clean air is important to good health. 新鲜的空气对健康是重要的。
People and animals need clean air to breathe. 人和动物都需要清洁的空气来呼吸。
The township, clean air, beautiful environment. 全乡空气清新，环境优美。
Now,more and more people are realizing the importance of clean air. 现在越来越多的人意识到净化空气的重要性。
That case involved section 211(c)(1)(A) of the Clean Air Act. 此案涉及到《洁净空气法案》的第211条（c）（1）（A）。
The release of carbon dioxide has taken a toll on clean air. 二氧化碳污染了清洁的空气
However having clean air on campus is well worth the price. 虽然如此,为了保持校园空气清新,多付出一点也是值得的。
Back Exhaust Air Device: It can prevent the air reversing in the common exhaust gas pipeline of kitchen and toilet. 止回排风装置：止回排风系统能够有效减少厨房间、卫生间公用排气管道内的气体产生反风；
Now, more and more people are realizing the importance of clean air. 现在越来越多的人意识到净化空气的重要性。
clean air devices 空气净化装置
Tuscany is a place known for its natural beauties, clean air and tranquility. 托斯卡纳区因其秀美的自然风光、清新的空气和醉人的静谧而闻名。
Suzhou Industrial Park Huadu Clean Air Conditioning Technology Co., Ltd. 苏州工业园区华都净化空调技术有限公司。
We don't have enough trees, waters, oil and clean air for our future. 译文：我们将来将会没有足够的树木，水源，石油和干净的空气。
Bryner G C.Blue Skies, Green Politics: The Clean Air Act of 1990[M]. 佐和隆光;等.;日本的大气污染控制经验[M]
The federal government promulgated the Clean Water Act and the Clean Air Act. 联邦政府颁布了《水清洁法》和《空气清洁法》。
Clean air is supplied to room after it is treated through above modules. 经过以上几个模块的处理后，洁净的空气被送入室内。
The legality of the plan turned on whether the agency could define the Clean Air Act term "stationary source" to refer to an entire manufacturing plant, rather than an individual device within the plant. 该计划由合法性取决于该机关是否可以把《洁净空气法》中“固定来源”一词解释为指的是整个制造工厂，而不是工厂的某一个别的什么装置。
Switzerland is famed for its physical beauty, its mountains and lakes, its crisp, clean air. 瑞士全国以风景优美著名，到处山湖交错、空气清新。
The air in the garden was warm and fragrant. 花园里的空气一片温馨。