Botstein
[人名] 博特斯坦
🗣️ 情景例句
This is no small accomplishment.
这是非同小可的成就。
Do you know when the next exam is?
你知道下次考试在什么时候吗？
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，