Action principle
[化] 作用原理
🧩 词语组成解析
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
🗣️ 情景例句
I'm afraid it just isn't good enough.
恐怕这不够好。
I would like to talk with someone in charge.
我想请你们负责人讲话。
How do you do?
你好！