Principle of equilibrium
[经] 平衡原理
🧩 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
Nice to meet you, Mrs. Cooper.
很高兴见到你， Cooper太太。
How often do you go swimming?
你多久去游一次泳？
Not yet.I must water the garden first.
还不能。我得先给花园浇水。