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
in almost a full week.
差不多有一整个星期了。
Please estimate your living costs for this month.
请估计一下你这月的生活费用。
You've got lots of old buildings in your country.
你们国家有许多古老的建筑物。