unitized solid-block tree

例句：

1. 1. The city has beenunitized into a single administrative district.
   这个城市已经被整合成一个单一的行政区。
2. 2. Thecompany has implemented a unitized system toimprove efficiency.
   该公司实施了一个一体化系统以提高效率。
3. 3. The new policy aims to unitizethe economy and create a more cohesive society.
   新政策旨在实现经济一体化，创造一个更加团结的社会。