Duration of existence
[经] 存在期间
🧩 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
Yes. It's a lovely day and good enough to travel.
是的，天气很好，旅游是再好不过了。
You're always mixing me up with my twin sister!
你老是把我和我的孪生姐姐搞混!
Well, it feels strange to have a twin sister.
是呀，有个孪生姐姐是觉得奇怪。