Typhoid fever sneaks in when sanitation fails.
环境卫
搞不好,伤
乘虚而入。
系统或设备的，清洁的;学;
;的，保健的;;
;;Typhoid fever sneaks in when sanitation fails.
环境卫搞不好,伤乘虚而入。
A sanitation worker picking up cigarette butts with an "in-dividually decorated bag" in his hand in Zhongguancun, March 9, 2009.
3月9日，中关村过街天桥,保洁员的手提袋上贴满了从墙上撕下的小广告。
The content of lead in the tealeaf is one of important guild line scaling the status of the tealeaf's sanitation by it.
茶叶中铅的含量是衡量茶叶卫状况的重要指标之一。
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