The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds.
这只2300万年的生物并不
海豹、海狮和海象的直系祖先，而来自另一个
。
The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds.
这只2300万年的生物并不海豹、海狮和海象的直系祖先，而来自另一个。
声明：以上例句、词性
类均由互联网资源自动生
，
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。
