• n. （美）流域；分水岭；集水区；转折点
• adj. 标志转折点的

water,水，shed,分开。

watershed (n.)

"line separating waters flowing into different rivers," 1803, from water (n.1) + shed in a topographical sense of "ridge of high ground between two valleys or lower ground, a divide," perhaps from shed (v.) in its extended noun sense of "the part of the hair of the head" (14c.). Perhaps a loan-translation of German Wasser-scheide. Figurative sense is attested from 1878. Meaning "ground of a river system" is from 1878.

1. The advert should only be shown after the 9pm watershed.

这则广告只能在晚上9点成人节目开始后才能播出。

来自柯林斯例句

2. The meeting has the potential to be a watershed event.

这次会议有可能成为具有转折性的事件。

来自柯林斯例句

3. Bad language before the watershed is widely resented.

在成人节目时间之前出现的脏话深为众人憎恶。

来自柯林斯例句

4. The middle decades of the 19th century marked a watershed in Russia's history.

19世纪中叶标志着俄国历史的转折点。

来自《权威词典》

5. Our marriage was at a watershed.

我们的婚姻到了一个转折关头.

来自《简明英汉词典》