1CHANGE/BECOME DIFFERENTan event or time when important changes happen in history or in your life 〔历史或人生的〕转折点,重要关头SYN turning point
watershed in
The 1932 election represented a watershed in American politics.
1932年的选举是美国政治的分水岭。
watershed decision/case etc
a watershed case on pension rights
标志着退休金权利转折性变化的案例
2.the (9 o'clock) watershedBritish EnglishBrEAMT the time in the evening after which televisionprogrammes that are not considered suitable for children may be shown in Britain(9点钟)分水线〔英国晚间允许成人电视节目播放的起始时间〕
3.SG technical the high land separating two river systems 分水岭,分水线