最近的加油站到这里3英里——THE nearest filling station have 3 miles from here.我需要更换备用轮胎——I need change the spare tire.注意安全驾驶——pay attention to driving safety.我有一条新的运动裤——I have a new slacks.跑步是我的强项——Jog is my strong point.工作上我要求自己很严格——...
Keywords: continuous monitoring; location-based applications; reverse nearest neighbor query; safe exit algorithm; mobile computing; road network 1. Introduction The rapid technological advances in wireless networks and development of handheld devices equipped with location sensing technology (e.g., smart ...