Duration of validity
[化] 有效时间
🧩 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
You won't believe what Tome just told me.
汤姆刚才告诉我的事会吓你
The adventure had been planned for quite a while.
那项冒险曾经作了长期的周详计划。
Let's go and see the pandas. I hear one of them has a baby.
咱们去看看熊猫吧。我听说有一只熊猫生了只小熊猫。