To probe into mechanism and model of the city-group integration and promote the form of city 's co-operative relationship is of much reality and advance.

探讨城市群体的一体化机制和模式，促进城市合作关系的形成，具有很强的现实性和前沿性。

youdao

Elections were called early after Ms Livni failed to form a new government following Prime Minister Ehud Olmert's decision to step down last year amid a corruption probe against him.

BBC: Israel rivals vie to head cabinet