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
About September to October.
大概是9月到10月。
How about 12:45?
12点45分怎么样？
He became mortally ill a few months before we had planned to go and,
就在他计划回国的前几个月，他突然身患绝症。