You may wonder how the expert on fossil remains is able to trace descent through teeth, which seem specious pegs upon which to hang whole ancestries.

 
  • 你也许会感到疑惑遗留的化石专家怎么可能通过看似华而不实的借口的牙齿来追踪后裔呢?而这些借口却又是整个家族的荣誉所在。
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