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
And then, two years ago, my wife died.
接着， 两年前我妻子去世了。
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
Only in a sparsely-populated rural community is it possible to disregard it.
只有在人口稀少的农村，才可以忽视准时的习惯。