利用这些分类标本，我们可以提出无数关于地球生命的关键问题。
There's an overwhelming number of questions we can ask about life on Earth using these archived specimens.
分类 这些视频，并且加上关于这些视频的附加meta信息；
Categorizing these videos and adding additional meta-information about the videos;
认知心理学家研究这一现象的方法是：请人们列出他们关于某个物体产生的语义联想，然后将这些联想分类，并测算它们出现的频率。
Cognitive psychologists have explored this phenomenon by asking by asking people to list semantic associations with an object, and mapping the type and frequency of associations.
认知心理学家研究这一现象的方法是：请人们列出他们关于某个物体产生的语义联想，然后将这些联想分类，并测算它们出现的频率。
Cognitive psychologists have explored this phenomenon by asking by asking people to list semantic associations with an object, and mapping the type and frequency of associations.
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