Planning is the process of deciding in detail how to do something before you actually start to do it.
The trip needs careful planning.
这次旅行需要周密计划。
The new system is still in the planning stages.
新系统仍处在计划阶段。
Planning is control by the local government of the way that land is used in an area and of what new buildings are built there.
New York City's Planning Commissions rejected the builder's proposals.
纽约市市政规划委员会拒绝了那个建筑商的提案。