1. I can't account for Peter's un- happiness.

2. Un- is a productive prefix.

3. The affixes "un-"and"-less"are often used make negative words, such as unhappy or careless.

4. The affixes un- and -less are often used to make negative words, such as 'unhappy' and 'careless'.

5. Three, we are now within un-, sub- or supernatural forces.

6. Love must tolerate un- perfectness.

7. It is the key to the technical that un- coulometer numerical values sensor will replace "status"defend as "regular" defend, and has a bright future.

8. Furthermore, un- equipotent division of floral primordial in the mutant caused the variation in numbers of stamens and pistils.

9. For un- resectable cholangiocarcinoma, what are the factors associated with it that impact the prognosis of the disease?

10. My message is only a tardy un- homing sail that bear up for you.

11. Actually, there is no room for any un- filmic work in the creation of a film.

12. Un- seasonably warm weather in April and May have helped boost sugar content and overall quality, and consequently prices, of the 2008 watermelons.

13. Un- discountable station services have been removed from the Cost Modifiers tab in the Outpost station management interface.

13. is a online sentence dictionary, on which you can find good sentences for a large number of words.

14. There are three hundred and sixty- four days when you might get un- birthday presents ... And only one for birthday presents, you know. Lewis Carroll 

15. There are many security properties in this scheme, such as privacy, un- forgeable , non-repeatable, traceable, non-repudiation, publicly verification and so on.

16. Nature has but one system of mechanics for "dividing the undivided" and "conditioning the un- conditioned" and that is the same in microcosmic waves or macrocosmic ones.

17. It has very important meaning for promoting democratic politics to analyze their un- escapable nature and influence on the democratic politics.

18. But because of characters of expansibility, heterogeneous multiprocessor and un- predictability of a grid, resource management and task scheduling are facing great challenge.

19. Conclusion:Study indicated that sex hormone was obviously correlated with coronary disease and male with high estrogen was an un- matchable factor why they were easy to get coronary disease.

20. Only later do I find that there's no pear at all—only a fist gradually un- raveling like layers of peel.

21. Summarize the two type's sensor of medium voltage switchgear surveillance and measuring; the protective sensor of measuring current and voltage; un- coulometer numerical values sensor.

22. First, initial conditions are very worrisome, including a very high and too persistent level of un- and under-employment.

23. The former approach is technically simpler in mice but less promising in some ways: for example, cells that undergo silencing of the suicide gene are permanently un- killable .

24. Article 2. The members of this treaty persistently hold that it is our peoples' un- deprivable rights in Asia to use nuclear energy for peaceful purpose.

25. Although it is facing up to great crisis in digital age, this institution still has un- substitutable institutional value.

26. But it is still a tremendous solecism to talk publicly about one's drug use un- less you are a recovering addict who wants to educate impressionable youth about their dangers.