National Ambient Air Quality Standard国家环境空气质量标准 national degradation自然降解;自然分解;自然退化 national environment (of a species)物种的自然环境 ..
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National Ambient Air Quality Standard国家环境空气质量标准 national degradation自然降解;自然分解;自然退化 national environment (of a species)物种的自然环境 ..
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National Ambient Air Quality Standard国家环境空气质量标准 national degradation自然降解;自然分解;自然退化 national environment (of a species)物种的自然环境 ..
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This can be done only if national laws that encourage continued deforestation and forest degradation are reformed; and if communities are supported to plant appropriate trees.
只有通过修改那些鼓励森林砍伐和退化的法律,以及支持鼓励居民种植合适树木,这一目标才能得以达成。
The establishment of the Zhanjiang mangrove National Nature Reserve, pictured above, in 1997 was the first big step to reversing the degradation of mangroves in Leizhou.
上面这张照片拍摄的是湛江红树林自然保护区,该保护区设立于1997年,是雷州红树林保护迈出的第一大步。
Has the function of vacuuming disinfection and degradation, which can also disinfect the bed unit in and out effectively. This function has been granted the national patent.
具有抽真空消毒功能和解析功能,使床单位从里到外达到最佳消毒效果,此功能已获国家专利。
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