Semimajor
axis(椭圆的)半长轴
🗣️ 情景例句
And thanks for the advice about the house.
也谢谢你关于房子的建议。
One cannot make a silk purse out of a sow's ear.
朽木不可雕。
It's time to tell her the truth.
是该告诉她真相的时候了。