Semimajor axis
（椭圆的）半长轴
🧩 词语组成解析
axis(椭圆的)半长轴
🗣️ 情景例句
Hurt? What do you mean?
酸痛， 什么意思？
He came at a bad time.
他来的不是时候。
He simply told her that he worked for the Corporation.
他只说在埃尔斯米尔公司上班。