Length of pretection
[法] 保护期限
🧩 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
Eating salad is good for your health.
多吃色拉（蔬菜）对你的健康有益。
Do you work near the library?
你在图书馆附近工作吗？
I think she's twelve.
我想她十二岁了。