露天人工水渠

例句：

1. 1. The construction of the new road has greatly improved the traffic flow in this area.
   新路的建设极大地改善了该地区的交通流量。
2. 2. The farmers have built a man-made irrigation channel to irrigate their crops.
   农民们建造了一条人工灌溉渠道来灌溉他们的庄稼。
3. 3. The man-made canal is an essential part of the city's water supply system.
   这条人工渠道是城市供水系统的重要组成部分。