| 单词 | direct ancestor |
| 释义 | direct ancestor The discovery means that only one of the two species, known as hominins, can be a direct ancestor of modern human beings, and not both as was previously proposed. Times, Sunday Times This then was the direct ancestor of the helicopter rotor and the aircraft propeller. Retrieved from Wikipedia CC BY-SA 3.0 They were the direct ancestor of the modern cello. Retrieved from Wikipedia CC BY-SA 3.0 Being a cynodont, it was a relative of the direct ancestor to modern mammals. Retrieved from Wikipedia CC BY-SA 3.0 They do not appear to be a direct ancestor of modern swifts, however, but rather a group that retained an overall basal morphology. Retrieved from Wikipedia CC BY-SA 3.0 |
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