singly injection

• 一次注射

singly injection的用法和样例：

例句

1. A third injection of short-acting insulin can be added at midday if required.
   如果有必要的话，中午时可以第三次注射短效胰岛素。
2. Those young children who have not received a booster dose of vaccine in more than a year should receive an injection upon exposure.
   一年多没有接受加强剂量疫苗注射的年幼儿童，受暴露时，应接受一次注射。