Preparative column
[化] 制备柱
🧩 词语组成解析
a. 准备性的, 预备性的\\nn. 预备, 准备, 预备信号
column
['kɑləm]
n. 纵队，列;圆柱;专栏;
🗣️ 情景例句
We talked about that earlier.
我们先前谈过这个问题。
Don't forget to look after him.
不要忘记照料他。
Have you decided what music you'd like us to play at the party?
你决定好要我们在乡村聚会中演奏什么音乐了吗？