教室饮用水是被老师净化过的。
The drinking water in the classroom has been purified by the teacher.
上图：“纯净生活”，往鱼缸中灌的水会自动被过滤器净化。
Above: Pure Life, tell us about purifying the water directly when refilling the bowl.
现在，许多城市里的废水被净化后才让它流回河里。
Waste water from a number of cities is now "cleaned" before flowing back into rivers.
城市的污水被净化后，再排放到河流里。
The waste water from cities is made clean and back into rivers.
被冷却净化后的煤气经加压机，通过煤气管道输送使用。
Be cooling after purification of gas pressure machine, through the use of gas pipeline.
许多城市里的废水被净化后才让它流回河里。
Waste water from a number of cities is cleaned before flowing back into rivers.
这个房间的空气被净化了。
鞋子开胶。我的衣服被油净化了。
鞋子开胶。我的衣服被油净化了。
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