Semimajor
axis(椭圆的)半长轴
🗣️ 情景例句
And plus, if you are not completely satisfied, you can return it to us.
并且，如果您不是百分百的满意，你可以将产品退还给我们。
Prepare for a rain day.
未雨绸缪。
I determined to lodge a complaint as soon as we arrived.
我决定到目的地就给铁路部门提意见。