结论青岛市近郊区城市化，DM患病率接近市区。

Conclusion the suburb of Qingdao were urbanized, the prevalence of DM in which was near urban districts.

大城市是指市区和近郊区非农业人口五十万以上的城市。

A "large city" means one which has a nonagricultural population of 500,000 or more in its urban and inner suburban districts.

中梁山位于重庆市的近郊区，是净化城区污染空气，调节主城区气候环境的重要地带。

The Zhongliang Mountains, located in the suburb region of Chongqing, play a very important role in regulating climate, improving environment and cleaning polluted air of the city proper.