注入口

例句：

1. 1.The doctor injected the patient with a medication.
   医生给病人注射了一种药物。
2. 2. She injects her lipstick into her mouth for a more vibrant look.
   她把口红涂到嘴唇上，以获得更鲜艳的妆容。
3. 3.The scientist injects the sample into a test tube to analyze its properties.
   科学家将样本注入试管进行分析。