片语
water area environment sanitary administration水域环境卫生管理
environment sanitary facilities环境卫生设施
working environment sanitary standard工作环境卫生标準
Environment & Sanitary Engineering环境,外界
Zhaoyuan city environment sanitary administration招远市环境卫生管理处
sanitary or environment engineering公共卫生及环境工程
living environment become sanitary生活环境变得卫生
sanitary environment around fan进风机环境卫生