| 1. | Many puzzles cleared up instantly .
一些难解之谜一瞬间解决了。 |
| 2. | The police were unable to clear up the mystery .
警察解释不了这个难解的迷。 |
| 3. | This gave him a secure feeling of isolation .
这就使他感到有一种难解的孤寂。 |
| 4. | Questions about norms and spectra are likely to be recalcitrant .
有关范数和谱的问题多半是难解的。 |
| 5. | My task boils down to industrial liaison and trouble shooting .
我的职务统而言之就是，在工业方面负责联络并排难解纷。 |
| 6. | How news travels through a town is a mystery not easily to be solved .
至于消息如何能在城里不胫而走，更是个难解之迷。 |
| 7. | The reasons why ancient people studied the sky are as intriguing as how they did it .
古人研究天文的理由以及他们怎样去做，同样是难解的。 |
| 8. | Although the problem is intricate and complex , it can be solved very quickly with an electronic computer .
虽然问题虽然复杂难解，但用电子计算机很快就能解出。 |
| 9. | Philosophical problems and riddles would completely disappear if this method were properly used .
如果上述方法得以恰当运用，哲学的问题及其难解之谜就会完全消失。 |
| 10. | Thermal pollution is an inevitable concomitant of power generationan unavoidable implication of the second law of thermodynamics .
热污染是动力生产所无法摆脱的它与热力学第二定律有着难解之缘。 |
