| 1. | Today only a few of the answers are known .
目前已知的答案只有少数几个。 |
| 2. | Your theory does not square with the known facts ..
你的说法跟已知的事实不符。 |
| 3. | The pattern of the finite-difference coefficients is known .
有限差分系数的图式是已知的。 |
| 4. | No material known to man can withstand this much heat .
人们已知的材料中还没有能经得住这样高温的。 |
| 5. | It is difficult to relate these results with any known cause .
这些结果很难与任何已知的原因联系在一起。 |
| 6. | Geminiviruses are the only other group of plant dna viruses known .
双联病毒是已知的唯一另一组植物DNA病毒。 |
| 7. | The presently known particles are the ultimate building blocks of matter .
目前已知的粒子是物质的最终构件。 |
| 8. | Equation 6-9 is nonlinear and no closed-form solution is known .
1方程（6-9）是非线性的并且没有已知的准确形式解。 |
| 9. | About half of the world's known supply of copper ore is already in use .
全世界已知的铜矿储量，大约有一半已在使用了。 |
| 10. | The variations found are attributable to well-defined geochemical processes .
已知的各种变化都属于一定的地球化学过程。 |
