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同义词： caveman cave dweller troglodyte
以上来源于: WordNet
They are known as Upper Cave Men.
这是山顶洞人。
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We have very good records of cave men that didn't have a language.
我们有很好的没有语言的穴居人的记录。
The cave men lived in a period of history antecedent to written records.
穴居人生活在有文字记载之前的一个历史时期。
The cave where Abraham might have been born had been divided into two caves: one for men, one for women.
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