Cationic catalyst
[化] 正离子催化剂
🧩 词语组成解析
[医] 阳离子的, 阴向离子的
🗣️ 情景例句
It's nothing.
这没什么。
It's a long story.
说来话长。
Then for a period of several weeks we practise doing the play.
随后几个星期我们进行排练。