Partical velocity
[电] 粒子速度
🧩 词语组成解析
[电] 质点
🗣️ 情景例句
At today's exercise class...
今天上健身课的时候……
Messengers should neither be headed nor hanged.
两国相争，不斩来使。
No matter how hard I tried, it was impossible to fill this beautiful pen with ink and to this day it has never written a single world!
然而不管我如何摆弄，那枝漂亮的钢笔就是吸不进墨水来。直到今天，那枝笔连一个字也没写过！