unruffled waters

• 平静的海域

unruffled waters的用法和样例：

例句

1. The ship had drifted into uncharted waters.
   船漂到了海图上未载明的海域。
2. This was a sombre sacrifice in lonely waters.
   这是在幽僻的海域内的一次凄惨的牺牲。