Pn boundary
[电] PN界面
🧩 词语组成解析
清注意, 本票, 期票\\n[计] 页编号, 可编程网络
🗣️ 情景例句
Are you all right?
你怎么了？
Our family always has a traditional Christmas.
我们家每年都要庆祝传统性的圣诞节。
What seems to be the problem.
什么样的问题呢？