Alkenes
(alkene 的复数) n.[化]烯烃,链烯
🗣️ 情景例句
Did you read the story in the paper, Malcolm?
你看到报纸上的新闻了吗 ，Malcolm？
Don't forget to put stamps on your letter.
别忘了贴邮票。
My false teeth are stuck to it.
我的假牙还在上边呢！