Principle of conservation
[经] 稳健原则
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Pleased to meet you.
很高兴见到你。
I am sorry you feel sad.
抱歉，让你伤心了。
They always tell you what a picture is 'about'.
总是告诉你一幅画的“意思”是什么。