🧩 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];
sierra
[[si'erə]]
n. 呈齿状起伏的山脉
[经] 里昂
🗣️ 情景例句
Excuse me, but could I ask you a quick question?
对不起，我能问你一个简短的问题吗？
Stand up,please.
请站起来。
There was no doubt that we were unwelcome visitors.
毫无疑问，我们的来访是不受欢迎的。