Poynting vector
[化] 坡印亭矢量
🧩 词语组成解析
[人名] 波因廷
🗣️ 情景例句
Don't mince words.
别吞吞吐吐的。
After dinner sit a while, after supper walk a while.
午饭后要坐，晚饭后要走。
You need to wear lots of warm clothes.
人们要穿很多的保暖的衣服。