执法机构收到坐标，在电脑地图上显示实时定位，并且记录下目标的行动轨迹。
The law enforcement agency receives the coordinates and displays the target's location in real time on a computerized map, keeping a record of the target's movement.
科学家们认为布什之所以躲闪是因为他的大脑行动通道在视觉通道开始跟踪鞋子的飞行之前就把鞋子的轨迹归为一种威胁。
The scientists contend that Bush ducked because his brain’s action pathway categorized the trajectory of the shoe as a threat well before his perception pathway began to track its flight.
回答这个问题的麻烦之处就在于，人们通常是不按轨迹行动的。但是多亏了我们随身携带的手机，如今我们有迹可循了。
The problem with answering this question is that people normally are not tracked - but today we are tracked thanks to the phones we carry with us.
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