Unipolarina
單極亞目
??? 情景例句
Did you watch the football game between Manchester United and Arsenal last night?
昨晚你看了曼聯對阿森納的足球比賽嗎？
Have you ever thought about a career in the medical profession?
你曾經在醫藥專業考慮職業嗎？
No, we don't.
不，沒有。