1. They just move so slow, ” said Donna Runnels, 58. 他们跑的很慢,”58岁的唐娜·让奈尔斯说。
2. But in urban skyscrapers, flyovers, runnels and other special areas, GPS positioning information is often interrupted, or positioning accuracy greatly reduced. 但是在城市高楼区、立交桥、隧道等特殊地段,GPS的定位信息常常中断或者定位精度大大降低。