环卫

huán wèi bù mén

环卫部门

environmental service

huán wèi gōng rén

环卫工人

sanitation worker

huán wèi jī xiè lǐng yù

环卫机械领域

field of environmental sanitation machinery

huán wèi háng yè lóng tóu qǐ yè

环卫行业龙头企业

environmental sanitation leading enterprise

biān wài huán wèi gōng rén

编外环卫工人

supernumerary city sanitation worker