nose primer

例句：

1. 1. The doctor advised him to use a nose primer before surgery.
   医生建议他在手术前使用一个鼻子前导物。
2. 2.The child was wearing a nose primer during the exam.
   考试期间，这个孩子戴着一个鼻子前导物。
3. 3. The new model of the car has an improved nose primer system.
   这款新车的鼻前导系统得到了改进。