Cavity radiation
[电] 空腔幅射
🧩 词语组成解析
🗣️ 情景例句
I didn't have the heart to tell her that she was not chosen.
我没有勇气告诉她说她没有入选。
We want to strengthen our ties with the United States.
我们想加强和美国的关系。
There is a river in the picture.
画里面有一条河。