But for ungulates, such as deer, sheep, and moose, it's long been hypothesized that seasonal migration is a learned behavior, passed down from one generation to the next.

但对于鹿、羊和驼鹿等有蹄类动物，长期以来人们一直假设季节性迁徙是一种后天习得的行为， 代代相传。

I wouldn't be surprised if, you know, Pelagornis could just cross the Atlantic and, you know, stop over in Africa or Europe and then come back as part of its seasonal migration.

如果 “Pelagornis”可以横跨大西洋，在非洲或欧洲停留，然后参与季节性迁徙再回来，我也不会感到惊讶。

I wouldn't be surprised if, you know, Pelagornis could just cross the Atlantic and, you know, stop over in Africa or Europe and then come back as part of its seasonal migration.

Ksepka：如果 Pelagornis 可以穿越大西洋，然后在非洲或欧洲停留，然后作为其季节性迁徙的一部分返回，我不会感到惊讶。