To display all of the children, go to the upper right corner of the diagram and select Show all children when expanding.
为了显示所有的子构件，切换至图表右上角并选择 在展开时显示所有的子构件。
The domestic tourist market is the main part of Sichuan tourist market. The initial task of expanding the domestic tourist market is to subdivide the market and select the target market.
国内旅游市场是四川旅游市场的主体，而开发国内旅游市场首要的任务就是进行市场细分，从中选择目标市场。
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