floodway

例句：

1. 1. The floodway was blocked by the rising water.
   洪水道被上涨的水阻塞了。
2. 2. The floodway is a crucial part of our river system.
   洪水道是我们河流系统的重要组成部分。
3. 3. The floodway is used to divert the flow of water during heavy rains.
   洪水道用于在大雨期间引导水流。