Term of validity
[化] 有效期间\\n[经] 有效期限
🧩 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
Is it too early to call Mr. Carlson?
现在打电话给Carlson先生会不会太早了？
Do you think there is something wrong with the contract?
你认为合同有问题吗？
They will be able, as it were, to see and hear us in action.
他们能够身临其境般地观看我们做事，倾听我们讲话。