They may advise to turn utilities off or on so it's important to know the location of your home's water valve, electrical panel, gas valve and floor drain.

他们可能让你打开或关闭家中设备，所以了解水阀、电闸、煤气阀以及下水道的位置很重要。

Within tens of square Kilometers, there are more than 600 sinkholes and floor drains, a huge underground river, and rolling mountain meadows, which combine to form a primitive and beautiful natural scenery.

数十平方公里的范围内又六百多个天坑地漏流量巨大的地下暗河与连绵起伏的高山草甸组合成了原始而幽美的自然风光。