OG10-5-26

lukeleng

(C) the role of molecular biology in disproving older theories of embryonic development

中心词是the role of molecular biology ，这不是文章的中心词；in disproving older theories of embryonic development

文章的第一段没有提出 theories，所以the role of molecular biology的作用不是用来反对旧理论的．如果这句改成the role of molecular biology in study of embryonic development意思上是说得过去了，可是还不是文章的主题，文章的主题不是说the role of molecular biology 的

Recent discoveries in molecular biology, however, have

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            opened up prospects for a resolution of the debate，molecular biology的作用是opened up

[此贴子已经被作者于2007-9-27 18:56:08编辑过]

lukeleng

the application of molecular biology in study of embryonic development

application也不是主题，只是途径，手段，手段为目的服务，目的才是主题

[此贴子已经被作者于2007-9-27 19:06:52编辑过]