在安全的校园中 在安全的校园中(living in safety Environment) (living in safety Environment) 5. 5.
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Secondly, with the analysis on the living environment in rural areas, land resources, drinking water safety, solid waste pollution, the author reveals the environmental pollution hazards and causes.
其次，通过对农村居住环境、土地资源、饮用水安全问题、生活垃圾污染四方面现状的分析，揭示了当前农村人居环境污染的危害和原因。
When water or emulsion used in mining or improve safety condition, it also changes the microbial living environment in coalbed.
煤层注水与水力作业在解决煤矿安全与生产难题的同时，也改变了煤层微生物生存环境。
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