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
The truth is, I am.
事实上， 我的确如此。
The pressuer of work was too great for him.
工作压力使他承受不了。
He's in bed.
他躺在床上。