Once men began to drain it; suddenly one of them raised a cry that he saw his house in flames.
人们曾一度要抽干湖水，突然有个人大叫起来：他看见自己的房子着火了。
Build a model of a house water and drain system.
造一个房屋给排水系统的模型。
The floor drain is one lf small sanitary equipment in the indoor floor draining system, Because it is of small volume and low price, it is usually ignored in the house decoration.
地漏是室内地面排水的一个不起眼的卫生设备。由于它全积小价格低，在家庭装修中一直被人们忽视。
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