an area or ridge of land that separates waters flowing to different rivers, basins, or seas
分水岭。
an area or region drained by a river, river system, or other body of water
流域。
an event or period marking a turning point in a course of action or state of affairs
分水岭;转折点;重要关头
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these works mark a watershed in the history of music .这些作品是音乐史上的一个分水岭。
〈英〉 开始播放儿童不宜电视节目的时间。
"early 19th cent.: from