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
Don't speak too soon.
话不要说得太早。
She can only speculate on the amount of damage done.
她只知道推测损失额的方法。
It was a bit green.
还有点生。