方案上提出了三个层次：悬浮广场，街道和考古水平。

Three levels are present in the proposal; the floating plaza, street level, and archaeological level.

youdao

方案上提出了三个层次：悬浮广场，街道和考古水平。

Three levels are present in the proposal; the floating plaza, street level, and archaeological level.

youdao