这条水路是连接两个城镇的重要运输通道。

The ___waterway serves as a vital transportation link between the two towns.

这条河流的河道在雨季会变宽很多。

The ___river becomes much wider during the rainy season.

这个地区的发达离不开其密集的河网系统。

The prosperity of this region depends on its extensive ___waterway system.