都市问题通常会从市区扩展到郊区。
Urban problems often stretch beyond city limits into suburbs.
SK电信还透露，他们将在2011年开始向汉城提供LTE服务，并将在2012之前把该项服务扩展到大城市区域和其他六个城市。
SK Telecom also revealed it will start providing LTE services in Seoul from 2011 and will expand the service to the Seoul metropolitan area and six other cities by 2012.
城市的扩展、能源的消耗和自然环境的破坏给城市区域微热环境造成了消极影响。
With the city expanding, energy consumption and environment destroying show negative effect on the thermal micro-environment of urban areas.
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