便池

tā men zhī dào shuí zài biàn chí li dà biàn le ma

他们知道谁在便池里大便了吗？

Did they find out who crapped in the urinal yet?

qǐng wù xiàng biàn chí nèi tóu rù zhǐ jīn bēi zi zá wù

请勿向便池内投入纸巾、杯子、杂物。

Please do not throw towels, cups, objects in toilet.