单词：reperching
[网络] 精炼
单词：reperching 相关文章
How do birds sleep? How do birds hang onto trees when theyre asleep? Why dont they fall off? That's easy. It's because of the hallux toe. Hallux toe? Is that the toe on some birds that points backwards instead of forwards? That's the one. We already
发表于:2019-01-26 / 阅读(121) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest