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
Because my birthday is tomorrow.
因为明天是我的生日。
I can't make it.
我去不了。
She usually wears that round her middle when she goes out.
她外出时总是把它系在腰上。