n.河道，水道，沟渠，渠道

原形：watercourse复数：watercourses

The river is the main watercourse for this region, providing water to countless farms and households.
这条河流是该地区的主要水道，为无数农场和家庭提供水源。
The watercourse meanders through the valley, creating a picturesque landscape.
水道蜿蜒流过山谷，营造出一幅如画的风景。
Farmers have built small dams along the watercourse to irrigate their fields during dry seasons.
农民们在水道沿线建起了小水坝，以便在干旱季节灌溉农田。
The pollution in the watercourse has led to a decline in fish populations.
水道中的污染导致鱼类数量急剧下降。
The old map showed a network of watercourses that were once used for transportation.
古老的地图上显示了曾经用于运输的水道网络。
Restoration of the natural watercourse has been a key project for the local environmental agency.
恢复自然水道是当地环保机构的一个重要项目。
The watercourse dried up in summer, revealing a bed of pebbles and stones.
夏天水道干涸了，露出了一片鹅卵石和石头的河床。
The watercourse serves as a natural boundary between the two countries.
这条水道天然地成为了两国之间的边界。
Environmentalists are advocating for the protection of watercourses from industrial waste disposal.
环保主义者正在倡导保护水道免受工业废弃物排放的侵害。
The hike followed the winding watercourse, offering stunning views of the surrounding wilderness.
徒步旅行沿着蜿蜒的水道进行，沿途提供了周围荒野的壮丽景色。