uterine bell

例句：

1. 1. The uterine bell was a symbol of the new life inside her womb.
   子宫铃铛是她在子宫里新生命的象征。
2. 2. The bell rang as the doctor entered the operating room, signaling the start of the surgery.
   当医生进入手术室时，铃铛响了，标志着手术的开始。
3. 3. The bell rang for the first time in years, reminding everyone of the importance of tradition.
   多年来第一次响起的铃声，提醒着大家传统的重要性。