"forcing a fluid into a body" (with a syringe, etc.), early 15c., from Middle French iniection (14c.) or directly from Latin iniectionem (nominative iniectio), noun of action from past participle stem of inicere (see inject).
权威例句
1. Execution by lethal injection is scheduled for July 30th.
定于7月30日执行注射死刑。
2. It has to be given by injection, usually twice daily.
它必须通过注射摄入,通常一天两次。
3. He was executed by lethal injection earlier today.