middling city的用法和樣例：
例句
- Yiyang is a middle city which locates in the southern central China.Its urban culture has certain representation.
摘要益陽(yáng)作為中國中部地區的一座中小城市，其城市文化具有一定的代表性。 - Taking the Chenzhou City of Hunan province as an example, the Chenzhou Mode of small and medium-sized cities rising in central China is introduced in the paper.
以湖南省郴州市為例，介紹了中部地區中小城市崛起已初具雛形的郴州模式。
