The opposite functionality can be achieved with the push and unshift methods which add elements to an array .

相反的功能可以通过push和 unshift方法实现，它们将元素添加到数组中。

Integrated development should firstly definite the variety deviancy regional unshift combination and orientation of attraction of the tourism resources .

整合开发必须首先明确旅游资源的多样 性与变异性、区域 性 与 不 可 移动性、组合性和吸引力的定向 性等 特点。