Paleogene
a. & n.[地]早第三纪(的),下第三系(的)
🗣️ 情景例句
Yes. Have you got any seats left on the 10th at 7:30 a.m. to HongKong?
是的。你们还有10号早上7点半去香港的机票吗？
Big deal!
有什么了不起？
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，