只要石灰窑按照正确的方法运作，产生的将是浓缩和净化后的二氧化碳气体。
The gas will already be concentrated and pure if the kilns work the right way.
当水净化后，我们可以喝它了。
水从井中抽上来后就立即加以净化。
The water was purified as soon as it was pumped up from the well.
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.
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.
废气净化后才排入空气。
净化后水质符合饮水卫生标准。
After combined treatment, the water quality met the Sanitary Standard for Drinking water.
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.
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.
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