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 never expected you would do such a fantastic job.
我从没想过你会做得这么出色！
Every day is not Sunday.
好景不常在，好花不常开。
Can I help you?
我能帮你吗？