Olefination
烯化作用, 成烯作用
🗣️ 情景例句
He is an orphan, so he is not sure which family name he should have.
他是个孤儿，因而不知道他自己姓什么。
Better luck next time.
下次好运吧！
She withdrew $1000 from her bank and followed the kidnapper's instructions.
她从银行取出1，000 英镑，并照绑架者的要求做了。