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tracker

['trækə]

释义

n.跟踪器；跟踪系统
A computer program that monitors something.

例句
Caroline: Max, relax.I haven't seen you this anxious since the Dominos pizza tracker went down.(2 Broke Girls)
卡洛琳：麦克斯，冷静。自从上次多米诺披萨的送餐跟踪系统坏了以来，我还从来没看见过你这么担心过。（破产姐妹）