Diethylidene
[化] 二亞乙基; 2-丁烯
??? 情景例句
Why should I hire you?
我為什么要用你呢？
Could you hold your questions until I've finished?
請(qǐng)你把你的問(wèn)題留到我把事情做完再問(wèn)好嗎？
Show your tickets，please.
請(qǐng)出示你的票。