n.流域；分水嶺；轉(zhuǎn)折點

Zhifanggou Watershed of Ansai is taken as a case study in this paper. 文章試以安塞紙坊溝流域為例，通過航片解譯分析流域土地利用現(xiàn)狀。

The Great Dividing Range is Australia's main watershed. 大分水嶺是澳大利亞的主要分水嶺。

The mountain is the watershed of the two rivers of the Yangtze and Qiantang. 黃山是長江和錢塘江兩大水系的分水嶺。

Leaving her first job was a watershed in her life. 辭去她的第一份工作是她生活中的一個轉(zhuǎn)折點。