78. Scientists have devised a way to determine roughly where a person has lived using a strand of hair, a technique that could help track the movements of criminal suspects or unidentified murder victims.
主干:Scientists have devised a way to..., a technique that...
解析:1.主干部分动词devised 的宾语是a way,其后有一个不定式短语to determine...作后置定语;a technique 是对a way 的详细说明,是a way 的同位语(注意,这不是并列成分)。
2.determine 带了一个由where 引导的宾语从句,现在分词短语using...修饰动词determine,是它的方式状语。
3.that 引导的定语从句修饰a technique;help track...中的track 是省略了to 的不定式,表示help 的目的。
译文:科学家发明了一种办法,使用一缕头发来大致判定一个人在哪里生活过,这种技术有助于追查犯罪嫌疑人的或者身份不明的谋杀案受害者生前的行踪。
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