n.青霉素，盘尼西林
Penicillin was an extremely significant medical discovery.
青霉素是极其重要的医学发现.
I should have asked him for a shot of penicillin.
我应当让他给我打一针青霉素的.
She injected the patient with penicillin.
她给病人注射了青霉素.
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