1. Encapsulation/modularization: Ensure that your code interacts, but doesn't interdepend.

2. These four levels interrelate and interdepend each other. When we deal with medical image which accord with DICOM standard, primary problem is how to get the data of the image file.

3. It should be harmonious symbiosis, in which the teachers and students shall interdepend and intercommunicate to experience and grow together.

4. The overall development of human being and the construction of socialist harmonious society interdepend and mutually reinforce, both in theory and practice to a high degree of uniformity.

5. But to a certain extent, the government can control and handle the media too. They interdepend with each other, and they have the same ideology, values and interests substantially.