single injection method的用法和樣例：
例句
- A third injection of short-acting insulin can be added at midday if required.
如果有必要的話，中午時可以第三次注射短效胰島素。 - Those young children who have not received a booster dose of vaccine in more than a year should receive an injection upon exposure.
一年多沒有接受加強劑量疫苗注射的年幼兒童，受暴露時，應接受一次注射。
