Because the gap of the overflow pipe and the bathtub is too small, they can not be assembled together according to the manual.
由于溢水管与浴缸间隙太小，不能按照说明书进行组装。
And, when you fill the tank again, water will reach the top of the tank and overflow through this vent pipe.
而当你又注水进水箱的时候，漫过箱顶的水就从这个溢水管溢出。
An external overflow pipe connects the absorber reaction tank to the box.
外部溢流管把吸收塔反应箱和密封箱连接起来。
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