Poynting vector
[化] 坡印亭矢量
🧩 词语组成解析
[人名] 波因廷
🗣️ 情景例句
Growing up without a mother is difficult.
在没有母亲的情况下长大不简单。
Goodbye, it was nice meeting you.
再见，很荣幸认识你。
Congratulations on you success.
祝贺你的成功。