| 21. | It is comparatively of recent origin . |
| 比较而论，它起源于近代。
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| 22. | It is of more remote origin . |
| 它起源于更为久远的年代。
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| 23. | He comes of Scottish origin . |
| 他是苏格兰人 血统。
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| 24. | The fire is of suspicious origin . |
| 这场火灾起因可疑。
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| 25. | We must conclude from the work of those who have studied the origin of life, that given a planet only approximately like our own, life is almost certain to start. |
| 根据研究生命起源的人们所作的工作，我们必然会得出这样的结论：如果设想有一颗行星和我们地球的情况基本相似，那几乎肯定会产生生命。
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| 26. | The origin of this nation is wrapped in mystery. |
| 这个国家的起源仍是一个谜。
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| 27. | Darwin generalized from many facts to reach his idea about the origin of man. |
| 达尔文对许多事实加以归纳，得出了他对于人类起源的观点。
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| 28. | Its origin goes back to medieval times. |
| 它的起源可追溯到中世纪。
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| 29. | Several theories have been postulated in regard to the origin of speech. |
| 关于言语的起源已有好几种假说。
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| 30. | American in origin . |
| 起源于美洲[美国]。
|