The downpipe of this building could fall off at any time .

这个楼的落水管随时都有脱落的危险。

His dwelling now was a hut with a hole in the roof to satisfy the needs of smoke wanting to go out , and with old bulging beer barrels , corseted by rusty iron hoops , placed at strategic points around the outside walls , to act as downpipe and spouting .

现在他的寓所是一座小棚屋，屋顶上有个洞作为烟囱，围绕外墙放置着几个铁箍都生了锈的啤酒桶，起到落水管的作用。