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
Trust me!
相信我！
Please don't snack; you will ruin your dinner.
请别吃点心了，你会对正餐失去胃口的。
It's seven twenty.
七点二十了。