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
Sit down, Robbie. Let's get to work.
坐下来 ，Robbie， 让我们开始做功课吧。
After breakfast,I'll get ready go to work.
在早餐以后，我将准备好去工作。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。