120天搞定托福阅读长难句(第97天)

2022-06-07 05:34:27

  

  They are an example of a common theme in evolution,the more or less parallel development of different types of body structure and function for the same reason--in this case,for flight.

  (the more or less parallel development of different types of body structure and function for the same reason作a common theme in evolution的同位语)

  它们例证了进化中的一个常见主题,即不同类型的身体结构和功能为了同一目的 而或多或少地平行发展——在这种情况下,是为了飞行的目的。

  分句1:They are an example of a common theme in evolution

  分句2:the more or less parallel development of different types of body structure and function for the same reason

  分句3:--in this case,for flight.

  2和3嵌套,3是2的补充说明

  1和2嵌套,2是1中theme的同位语

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