Semibenzene
半苯, 对二烷基亚甲基环己二烯
🗣️ 情景例句
What does your father do?
你父亲从事什么职业？
David would get up early in the morning to deliver newspaper.
戴维一早起床就去送报纸。
I'm sorry to hear that.
真遗憾。