It points out that we can t discuss the development of towns in a point of view restricting on a town itself,but must concern with the optimizing output of the whole urbanization system and the virtuous mutual motion of the “dual track” urbanization system of our country and prevent vicious circle.

This paper studies curricular designing for undergraduates from perspective of thinking features of interpreters,proposing duality mode of teaching linguistic knowledge and interpretation techniques.

Because evolutionary reformation formed project valuation way "dual track system" and the market was unperfect and unordered,the environment for producing rent-seeking behavior was offered.

The rent-seeking behavior of Chinese medical service market under the single-track or double-track system was introduced on base of traditional monopoly theory and rent-seeking concept.

In the present world,British and American legal system uses double-track system detection pattern and the continental legal system uses.

To improve the existing labour arbitration ststem, we should introduce a double-track system separating arbitration from trial,build up labour arbitration setups and set enforcement and matching measures for settling labour arbitration case.