Semimajor
axis(椭圆的)半长轴
🗣️ 情景例句
I surely do.
我当然喜欢。
My brother wants to learn how to swim.
我的兄弟要去学游泳。
I'm afraid I must.Look at it!It's terribly dry.
恐怕我得现在浇。你看看，干得厉害。