environmental sanitation短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 环境卫生 The composition, operational principle, advantage, function of in-situ treatment installation of odor and dust, and its application in environmental sanitation industry were introduced. 介绍了臭气粉尘原位治理装置的组成、工作原理、优点、用途，以及该装置在环卫行业中的应用。 dictall