Alfene synthesis
[化] 铝烯合成法(利用铝催化剂合成α-烯烃方法)
🧩 词语组成解析
🗣️ 情景例句
Interesting. What do you photograph?
很有意思。你拍些什么样的照片呢？
The whole class is in a heated discussion.
全班同学正在热烈讨论。
He has worked there since it opened in 1989.
从1989年这家工厂开办起，他就在这儿工作。