A GPS tracking device had turned itself off and they had to find him. The Sun (2016)How about monitoring their movements with a tracking device? Times, Sunday Times (2007)When looking for a passive fund find one with a low tracking error. Times, Sunday Times (2013)The tracking error is not always a bad thing. Times, Sunday Times (2011)You'll pay less if you fit your car with an approved alarm and tracking device. Times, Sunday Times (2014)One day somebody will invent a small, cheap tracking device that can be used with bicycles. Times, Sunday Times (2007)Conventional tracking devices can't be used. Times, Sunday Times (2015)A tracking device will increase the chances of recovering the car if it is taken. Times, Sunday Times (2015)He is out of jail but he is not free, not with an electronic tracking device on his ankle. Times, Sunday Times (2010)I have to fill this long tracking shot so you've got to think of something else. Times, Sunday Times (2011)My mobile phone was, effectively, a very expensive tracking device. Times, Sunday Times (2007)A NEW tracking device aims to put an end to lost luggage for good. The Sun (2013)
较常使用。在柯林斯辞典中， tracking 是1万个最常用词之一。
tracking 的定义—— 柯林斯 英语词典
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