An overflow pipe is a stainless steel or hard plastic tube fitted with a rubber stopper that is inserted into the drain of a sink to maintain a constant water level.
An overflow pipe is a stainless steel or hard plastic tube fitted with a rubber stopper that is inserted into the drain of a sink to maintain a constant water level.
这种装置指的是一种硬塑料或不锈钢的管，它配有一个橡胶头，用来堵住下水池，以便保持水位。