injection
US /ɪnˈdʒek.ʃən/
UK /ɪnˈdʒek.ʃən/

1.
注射, 打针
an act of injecting a drug or other substance into the body
:
•
The nurse gave him an injection to relieve the pain.
护士给他打了一针注射以缓解疼痛。
•
He has a fear of needles and hates getting injections.
他害怕针头,讨厌打针。
2.
注入, 投入
the action of introducing something into a system or process
:
•
The government announced a massive capital injection into the economy.
政府宣布向经济进行大规模资本注入。
•
The new software requires an injection of fresh data.
新软件需要注入新的数据。