常見例句

• According to this scenario, scales became feathers by first elongating, then growing fringed edges, and finally producing hooked and grooved barbules.
  根據(jù)傳統(tǒng)理論，鱗片變成羽毛的第一步是先拉長(zhǎng)，接著長(zhǎng)出流囌般的邊緣，最後産生有小鉤與溝槽的羽小枝。
返回 barbules