1 [C,U] (an) injection (of sth) (into sb/sth) the act of putting a drug or substance under the skin of a person's or an animal's body with a needle (a syringe) 注射:
to give sb an injection给某人注射a tetanus injection破伤风注射剂:An anaesthetic was administered by injection.以注射进行麻醉。 [SYN] jab 同义词为jab
2 [C] a large amount of sth that is added to sth to help it 投入的大量…:
The theatre needs a huge cash injection if it is to stay open.这家剧院需要投入巨额现金才不致倒闭。
3 [U] [C] the act of forcing liquid into sth 喷射:
fuel injection燃油喷射