gray-waterCOCA²¹⁸⁸⁹² 基本例句 🌏灰水；废水或中水 Rainwater and gray-water from the buildings will be recycled daily for use in the landscaping. Sewage will be treated biologically, and all the toilets have water- saving technology. 雨水和来自建筑的可再利用废水将用循环用于每日的景观美化。污水用于生物处理，所有厕所都使用节水技术。 en400