Semimajor
axis(椭圆的)半长轴
🗣️ 情景例句
I'm most grateful to you for taking so much trouble to explain the best way of getting there.
你不厌其烦地给我解释去那里的最佳途径，我对些深表感激。
About ten minutes.
大约10分钟。
Do you usually buy in large quantities?
你们的订购量通常都很大吗？