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| 1. | It was also around this time that mankind's direct ancestor, Homo erectus, the species considered to |
| 也正是在那个时候,人类的直接祖先直立人--据认为是最早的真正的人类--在非洲和亚洲出现,取代了非洲南猿等类猿生物。 |
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| 2. | probably warm-blooded; considered direct ancestor of mammals. |
| 可能是温血动物；被认为是哺乳动物的直接祖先。 |
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| 3. | A direct ancestor. |
| 祖先直系的祖辈 |
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| 4. | Leakeys as Homo habilis (habilis means handy-man)-the toolmaker of the Olduvai Gorge area who is our direct |
| 第三类则是被利基夫妇命名为能人猿（habilis是手巧的人的意思）的这一物种的祖先——即奥杜瓦伊峡谷石器制造者，我们的直接祖先。 |
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| 5. | Direct descent from an ancestor;lineage or pedigree. |
| 家系从一个祖先传下来的直接世系；家系或家族 |
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