n.河源，上游

The headwaters of the Amazon River originate in the Andes Mountains.
亚马逊河的源头起源于安第斯山脉。
The remote headwaters of the river provided a pristine environment for wildlife.
这条河流的上游偏远地区为野生动物提供了一个未受污染的生态环境。
The park protects the headwaters of several major rivers in the region.
这个公园保护了该地区几条主要河流的源头。
They decided to embark on a hike to explore the headwaters of the river.
他们决定徒步去探索那条河的源头。
The headwaters of the Mekong are a vital part of Southeast Asia's ecosystem.
湄公河的源头是东南亚生态系统的重要组成部分。
The hydroelectric dam was built at the confluence of the headwaters of two tributaries.
水力发电站建在两条支流源头的交汇处。
Scientists study the health of the river by examining its headwaters.
科学家通过研究河流的源头来评估其健康状况。
The headwaters of the Nile are a remote and untouched wilderness.
尼罗河的源头是一片遥远而未经开发的荒野。
The proposed mining project would have devastating effects on the headwaters of the local watershed.
这个采矿项目将对当地流域的源头产生毁灭性影响。
The clean water from the headwaters is essential for the survival of the endangered species.
来自源头的清洁水源对于濒危物种的生存至关重要。