如厕前要检查水管与下水道管道，确保它们完好无损。塞好浴缸与水槽的下水口，以免污水倒流。

Check to see that water and sewage lines are intact before using the toilet. Plug bathtub and sink drains to prevent sewage backup.

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黛西在浴室里。那时她正在刷牙，但是水龙头开着。水流入水槽，消失在下水道中。

Daisy was in the bathroom. She was brushing her teeth and the tap was on. Water was pouring into the washbasin and vanishing down the drain.

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