创建卫生城市的英文：
build a nationally advanced clean city

Buffer buildings
缓冲建筑物

building elevation
建筑立面

This is a substantial building.
这是个坚固的建筑物。

Here is not merely a nation but a teeming nation of nations
这里不仅是一个国家，而是许多国家丰富的总和。

release of nationality
国籍解除; 放弃（脱离）国籍

a tributary nation
进贡国,2. 辅助的,3. 支流的,n.[C]1. 进贡国,附庸国[( to)]2. 进贡者,3. 支流

Prices are advancing.
各种物价都在上涨。

The advance was sounded.
进军号吹响了。

Petroleum is on the advance.
石油价格正在上涨。