外出驾游肯定要用GPS。北美很多旅游区讯号全无，可万一车抛锚手机又无信号，咋办？俺曾经在大雪天途中困住近6个多小时，郁闷啊！

来源: 姚言于 2015-07-26 18:58:08 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.