sigher

例句：

1. 1. She sighed deeply as she walked away from the exam room.
   她离开考试室时深深地叹了口气。
2. 2. The old man sighed with relief when he heard the good news.
   老人听到好消息时松了一口气。
3. 3. He couldn't help but sigh at the thought of what lay ahead.
   他不禁叹息，想到前方的未知。