high-water mark (alsohighwatermark)

• 1.  

  N-SING（单数型名词） The high-water mark is the level reached in a particular place by the ocean at high tide or by a river in flood. 高水位标志 ['the' N]
• 2.  

  N-SING（单数型名词） The high-water mark of a process is its highest or most successful stage of achievement. (成就的)巅峰 [with supp, oft N 'of/for' n]

  例：

  This was almost certainly the high-water mark of her career.

  这几乎肯定是她职业生涯的巅峰。