| Fuzziness in language has long been an interesting phenomenon for many philosophers, researchers and scholars, and has become a relatively formal subject of study in the area of linguistics ever since the emergence of Zadeh's Fuzzy Sets Theory. However, for decades'time, most researchers have just been focusing their attention on the very theoretic study such as fundamental theories and fuzzy linguistics without any noticeable breakthrough, while empirical studies with the application of theories are only a tame attempt and not thorough and specific enough. Moreover, the domains covered in these works are quite limited too. Therefore, this paper chooses fuzziness in DI as the subject of study to enrich the scope of fuzziness study. It applies theoretic study in fuzziness to the empirical study in DI, with a purpose to propose a theoretic framework for analyzing and handling fuzziness in DI, and to present certain pragmatic value, political value in particular, by analyzing the practical problems in DI caused by fuzziness and by putting forward some feasible tactics and skills to handle them. |