1
a watershed between A and B
此义指分隔两条河流的山脊，即“分水岭”。
The mountain range forms a watershed between the two river systems.
这条山脉构成了两条河流系统之间的分水岭。
分水岭
先理解核心含义，再看它在真实句子里的用法。
分水岭
a ridge of land that separates two adjacent river systems
The mountain range forms a watershed between the two river systems.
这条山脉构成了两条河流系统之间的分水岭。
标志着进程或发展方向改变的关键点；转折点。
A critical point marking a change in course or development.
分隔两个相邻河流系统的山脊
a ridge of land that separates two adjacent river systems
由一条河流及其支流排水的整个地理区域；所有径流汇入同一出口的区域
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
标志着独特或重要历史变化的事件,或重要发展的依赖事件
an event marking a unique or important historical change of course or one on which important developments depend
The hikers stopped at the watershed, where the land slopes down toward two different rivers.
徒步旅行者在分水岭停下，那里的土地向两条不同的河流倾斜。
AI contextual example
This ancient trail follows the watershed for several miles, keeping to the highest ground.
这条古老的小径沿分水岭延伸数英里，一直保持在最高处。
AI contextual example
The treaty defined the border along the watershed that separates the two river valleys.
条约将边界划定在分隔两条河谷的分水岭上。
AI contextual example
the agreement was a watershed in the history of both nations
该协议是两国历史上的分水岭。
WordNet
此义指分隔两条河流的山脊，即“分水岭”。
The mountain range forms a watershed between the two river systems.
这条山脉构成了两条河流系统之间的分水岭。
此义指河流的汇水区域，即“流域”，与“分水岭”含义不同。
The watershed of the Amazon covers much of South America.
亚马孙河流域覆盖了南美洲的大部分地区。
Not this
This event is watershed in my life.
Use this
This event is a watershed in my life.
watershed 是可数名词，表示“分水岭、转折点”时通常用单数并需要冠词；中文“分水岭”前没有冠词，受汉语影响容易漏掉 a，所以应说 a watershed。
Not this
The new policy was very watershed.
Use this
The new policy was a watershed.
watershed 是名词，不是可分级的形容词，不能受 very 修饰；表达“某事是一个转折点”时应使用 be a watershed 这样的名词结构。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
流域管理
Watershed management is essential for protecting clean water supplies.
流域管理对于保护清洁水源至关重要。
流域地区
Heavy rain can cause flooding across the entire watershed area.
大雨可能导致整个流域地区发生洪灾。
流域保护
The new law encourages watershed protection programs.
新法律鼓励流域保护项目。
流域恢复
Community groups are working on watershed restoration.
社区团体正在致力于流域恢复。
分水岭
A high watershed divide separates the two river systems.
一道高高的分水岭将两条水系分开。
转折点；分水岭时刻
The agreement marked a watershed moment in the peace talks.
该协议标志着和平谈判的一个转折点。
转折之年；具有分水岭意义的一年
That year was a watershed for the company's global expansion.
那一年是公司全球扩张的转折之年。
转折性决定；关键决定
The court's landmark ruling was a watershed decision for environmental law.
法院的里程碑式裁决是环境法领域的转折性决定。
Use watershed naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆成 water（水）+ shed（分），想象水流在此分道扬镳——watershed 就是分水岭。
语域：neutral 常见场景：geography、environmental science、formal writing 该义项为地理学术语，通常用于地理教材、环境研究或正式书面语境；日常交谈中讨论地形、河流时也会使用，但整体偏正式。
这些词都以 /ɛd/ 结尾，与 watershed 末尾的 shed /ʃɛd/ 同韵；shed 和 watershed 的末音节完全相同。head、thread、dead 拼作 -ead，said 拼作 -aid，都读 /ɛd/，不要按拼写读成 /iːd/ 或 /eɪd/。注意 watershed 主重音在 wa-，所以这些词只与末尾音节同韵，不和整个词押韵。
Dictionary facts from ECDICT, WIKTIONARY.