inner suburban district的用法和樣例：
例句
- A " small city " means one which has a non-agricultural population of less than 200,000 in its urban and inner suburban districts.
小城市是指市區和近郊區非農業人口不滿二十萬的城市。 - In this figure, we can clearly see that Beijing geothermal resources are concentrated in urban areas and the surrounding suburban areas.
在這張圖上我們可以清晰地看到，北京的地熱資源主要集中在城區及周邊近郊區。
