Active agent
[化] 活性剂
🧩 词语组成解析
active
['æktiv]
adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的;
n. [语法]主动语态;积极分子，活跃的人;
🗣️ 情景例句
I think I want to study journalism
我想学新闻学
Politeness is to do and say the kindest thing in the kindest way.
文雅就是善良地做事，和善地说话。
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。