Keflex
先鋒霉素Ⅳ
??? 情景例句
I've been studying all day, and I'm sick and tired of it.
我學了一天，現在感到厭倦。
I don't know him well.
我跟他不熟。
Jim, what's this in English?
吉姆，這個（東西）用英語怎么說？