n. a ridge of land that separates two adjacent river systems
n. 流域, 分水岭
[医] 分水界, 分水岭
1. The new policy marked a watershed moment in the country's history.
新政策标志着该国历史上的一个重要转折点。
2. After the watershed, the river's flow changed dramatically.
分水岭之后，这条河的流向发生了显著变化。
3. The documentary highlights the watershed events of the 20th century.
这部纪录片突出了20世纪的重要事件。