当时，各部门根据一种通常将卫生保健置于底层的等级体系，单独无系统地开展工作。

At that time, different sectors were working in an isolated, fragmented way according to a hierarchy that usually put health near the bottom.

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当您将一个形状置于层上时，那么最上层的层将会显示在图表前面，而最底层的层将会显示在图表的底部。

When shapes are placed into layers, the top-most layers appear at the front of the diagram, while the bottom-most layers appear at the bottom of the diagram.

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建筑的木构部分被置于围合底层的混凝土基座上，以防止受到湿气的影响。

To protect the wooden structure from moisture, it is placed on top of a concrete base which at the same time envelops the ground floor.

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