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
Don't lose your cool.
要沉住气。
What's the color of your new dress?
你的新衣服是什么颜色的？
You're right. And there are some jobs that men can't do very ell.
你说得对。有些工作男人干得不怎么好。