However, access control mechanisms can’t completely make sure that confidential information never leaks out, because the mechanisms cannot prevent hidden information flow and confidential information can stealthily leak out.

The significance of modern embodying information technique,the history and present situation of its developmnt and its wide prospect to practical use are fist introduced.

On Implicit Information Translation in Bian Cheng from the Perspective of Relevance Theory;

In Chinese-English translation,only when the implicit information gets well judged and reasoned can the target reader produce sufficient contextual effects and the best relevance.

The implicit graph information should be taken into consideration for engineering drawing recognition to imitate human behavior in reading engineering drawings.