Isoperimetric
[计] 等周的
🗣️ 情景例句
He has had various experiences in his life.
他的生活经验丰富。
He's not in. May I take a message for him?
他不在，我能替他捎个口信吗？
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，