请确保厨房排水管通畅后再开始洗碗。

Please make sure the kitchen ___drain is clear before you start washing the dishes.

大雨过后，我们发现浴室地板的地漏周围有积水。

After the heavy rain, we found water pooling around the ___drain in the bathroom floor.

一股恶臭从排水管传来，表明管道深处可能堵塞了。

A foul smell was coming from the ___drain, indicating a possible blockage deeper in the pipe.