nasal douche

例句：

1. 1. She used a nasal douche to freshen up her breath.
   她用鼻腔冲洗来清新口气。
2. 2. After the surgery, he had to use a nasal douche to clear his sinuses.
   手术后，他不得不使用鼻腔冲洗来清除他的鼻窦。
3. 3. The doctor recommended that she use a nasal douche several times a day to keep her nose clear.
   医生建议她每天几次使用鼻腔冲洗来保持鼻子畅通。