Retravirus
n. [微]逆轉錄酶病毒( 一種致腫瘤病毒)
??? 情景例句
He's something!
他真了不起！
The ox is never woe,till he to the harrow go.
掛耙去耕地，牛才知辛苦。
What are your discount terms?
你們的折扣條件如何？