If you have an injection, a doctor or nurse puts a medicine into your body using a device with a needle called a syringe.
近义词
shot
双语例句
例：
They gave me an injection to help me sleep.
他们给我注射了一针助我入睡。
例：
It has to be given by injection, usually twice daily.
必须要用注射的方式，通常一日两次。
2.?[C 可数名词] （资金或资源的）注入
An injection of money or resources into an organization is the act of providing it with more money or resources, to help it become more efficient or profitable.
双语例句
例：
An injection of cash is needed to fund some of these projects.