Peptimycin
肽霉素
??? 情景例句
She has now held the post of Prime Minister longer than anyone else this century.
她現在擔任首相任期之長在本世紀是前所未有的。
To roar
吠叫
In fact, I have just bought a book entitled How to Read a Thousand Words a Minute.
事實上，我剛買來一本叫《一分鐘讀一千字的訣竅》的書。