叹息

例句：

1. 1. She sighed deeply as she watched the sunset over the sea.
   她看着海上升日，深深地叹了口气。
2. 2. He sighed in relief when he heard the news that his team had won the game.
   当他听到他的队伍赢得了比赛的消息时，他松了一口气。
3. 3. The old man sighed heavily as he remembered the days of his youth.
   老人深深地叹了一口气，回忆起年轻时的日子。