Four-vector
四元矢量; 四矢量
🧩 词语组成解析
four
[fɔr]
num. 四;四个;第四;
n. 四的;四个一组之物;
🗣️ 情景例句
Guess who I ran into today?
你猜我今天碰见谁啦？
Soon learnt,soon forgotten.
学得快，忘得快。
Not to grasp firmly is not to grasp at all.
抓而不紧等于不抓。