downpipe
n. 落水管
例句
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。
In the dead of winter days, snow blocking the window, like a translucent crystal ice downpipe small columns, rows hung in the eaves.
十冬腊月天,雪堵着窗户,冰溜子像透亮的水晶小柱子,一排排地挂在房檐上。