Semimajor
axis(椭圆的)半长轴
🗣️ 情景例句
Yes, it is. Come up.
是的 是我。请上来
Would you care to see a movie tonight?
今晚你要不要去看电影？
Last summer I spent days in the garden watching thousands of ants crawling up the trunk of my prize peach tree.
去年夏天，我花了好几天时间站在花园里观察成千只蚂蚁爬上我那棵心爱的桃树的树干。