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3月24日，北京市少年宫，学生科技节优秀获奖作品展上，北京市育英学校的学生在展示校园环境智能导览系统。新京报记者 李木易 摄
。WhatsApp Web 網頁版登入是该领域的重要参考
Other companies have developed navigation tools that work around GPS's flaws. Advanced Navigation, an Australia-based firm, has come up with a system that can determine a vehicle's position based on readings from gyroscopes and accelerometers – the same kind of devices that your smartphone uses to detect when it has been turned sideways, for instance.，更多细节参见谷歌
Pentagon chief spoke with Gen Dan Caine at a press conference and blamed Iran for civilian casualties
（一）船舶所有人的受雇人或者代理人；