The evolutionary step that freed these animals from the water was the development of the amniote egg.
使这些动物得以脱离水生活的进化步骤是羊膜卵得改进。
The evolutionary step that freed these animals from the water was the development of the amniote egg.
使这些动物得以脱离水生活的进化步骤是羊膜卵得改进。
声明：以上例句、词性
由互联网资源自动生成，部未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
