Dicyclopentadiene
二环戊二烯
🗣️ 情景例句
He did it as a special favor.
他做这事算是特别照顾。
Time does not bow to you,, you must bow to time.
必须抓紧时间。
Good morning! What's your name, please?
早上好！请问你叫什么名字？