| 1. | This mathematics problem is extremely difficult .
这道数学题难度很大。 |
| 2. | The old man was extremely difficult to get along with .
这个老人极难相与。 |
| 3. | Determining the oblateness is extremely difficult .
测量扁率是极为困难的。 |
| 4. | It is extremely difficult to reproduce this type of contact .
这种接触方式极难重现。 |
| 5. | It is extremely difficult to judge how floor prices are to be set .
很难判断应如何制定最低价格。 |
| 6. | The differentiation between functional disturbances and physical lesions is often extremely difficult .
机能紊乱与器质性损害之间的区别常是非常困难的。 |
| 7. | This failure mode would have been extremely difficult to detect with any other diagnostic technique .
这种失效模式用其他任何诊断技术来检测都将是极其困难的。 |
| 8. | Unless this is done, it is extremely difficult to determine whether or not people's economic well-being is actually increasing .
除非做到了这一点，否则极难断定人民的经济幸福是否真的增进。 |
| 9. | It is extremely difficult to come to any conclusion in regard to the extent of the changes which have been thus definitely induced .
不过对于这种一定地诱发出来的变化的范畴，要下任何结论都是非常困难的。 |
