Activating agent
[化] 活化剂
🧩 词语组成解析
[计] 启动
🗣️ 情景例句
Will you excuse me?
我失陪了
Old wood is best to burn, old book to read.
老柴好烧，老书宜读。
These two have travelled through the earth.
这两种波都是穿过地球而来的。