| 1. | The origin of the moon is virtually an open question at this time .
实际上，到现在为止，月球的起源还是个未解之谜。 |
| 2. | Still going over all those unanswered questions
还在考虑那些未解之谜？ |
| 3. | It is one of the unanswered questions
这是一个未解之谜。 |
| 4. | Millions of personal computers sit idly on desks and in homes worldwide
与此同时，科研和宇宙仍有无数未解之谜。 |
| 5. | Millions of personal computers sit idly on desks and in homes worldwide
与此同时，科研和宇宙仍有无数未解之谜。 |
| 6. | But what generated the continuous supply of the gas was still uncertain
但是，到底什麽机制能够持续不断产生甲烷，仍然是个未解之谜。 |
| 7. | As the very seat of human intelligence , creativity and emotion , the brain has enviously guarded its secrets for millennia
但是，作为人的智力、创造力和情感的物质基础，人脑的功能仍是一个未解之谜。 |
| 8. | K . we still cannot completely explain why the temperature of the chromosphere and corona can be higher than the photosphere
度。为甚么日冕和色球层的温度可以比光球层更高，仍是天文学上一个未解之谜。 |
| 9. | As the very seat of human intelligence , creativity and emotion , the brain has enviously guarded its secrets for millennia
但是，作为人的智力、创造力和情感的物质基础，人脑的功能仍是一个未解之谜。 |
| 10. | Unless we understand how cells work , we can never understand why they go wrong , and that means we will never properly understand disease such as cancer
科学家致力对细胞进行研究，但至今对细胞为何出现不正常运作仍有很多未解之谜。 |
