Customers will buy miles in advance and renew as needed - without vehicle tracking devices.
消费者提前购买英里数，并在需要时进行补充——无需车辆跟踪设备。
Until recently, only larger birds could be followed using tracking devices, because the gadgets were too big and heavy to attach to small birds.
近年来，因为追踪器的设计较大或较重，无法附着在小型鸟类身上，只能对较大型的鸟类进行追踪
In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.
当1987年《探索》频道第一次播出著名的《鲨鱼周》系列时，研究人员还在使用防鲨笼和简陋的声音追踪设备。
The installation of video cameras, tracking devices and other monitoring tools can also help deter workers from pilfering, but employers should first review local laws on the practice.
摄像头、跟踪装置和其他监视工具的安装可以帮助制止员工的盗窃行为，但雇主们在实践中应首先回顾当地法律。
The scientists spent 10 years studying pigeons. They put tiny tracking devices and cameras on the birds' backs and then followed their movements using global positioning systems.
科学家们花费了10年来研究鸽子。他们在鸽子背后放置微型跟踪设备和摄像机，然后运用全球定位系统追踪它们的行动。
Most mobile phones are powerful tracking devices, with global-positioning systems (GPS) inside.
大多数手机有强大的跟踪装置，手机里装有全球定位系统(GPS)。
Some retailers, for example, have discussed implanting RFID tags, or wireless tracking devices, into loyalty CARDS.
例如有些零售商，讨论过要将射频识别标签或者无线跟踪设备植入忠诚度卡片中。
They put tiny tracking devices and cameras on the birds' backs and then followed their movements using global positioning systems.
他们在鸽子背后放置微型跟踪设备和摄像机，然后运用全球定位系统追踪它们的行动。
This plan is specially suitable for dynamic measurements and the automatic tracking devices of direction of Angle of small moving objects.
这一方案特别适用于小型运动物体方向角的动态测量和自动跟踪装置。
Now, a number of new devices are sold as stress trackers, measuring signs of stress the way fitness tracking devices monitor steps and movement.
近期上市的一些新设备号称可以像健身跟踪设备监测步伐和运动那样监测压力的体征。
The Journal's examination of the top 50 most popular U. S. websites showed that Microsoft placed third-party tracking devices on 27 of the top 46 sites that it doesn't itself own.
《华尔街日报》对美国最受欢迎的50家网站的检查显示，微软在46家中的27家网站上放置了第三方追踪工具，这46家网站都不是微软所有的网站。
He added that he thought many drivers would fail the licensing process and that he was wary of the GPS tracking devices the new law says must be installed on their vehicles as a safety measure.
他接着表示会有很多司机通不过审批程序，并称自己对新规定以安全为由要求车辆必须安装GPS追踪设备怀有戒心。
He added that he thought many drivers would fail the licensing process and that he was wary of the GPS tracking devices the new law says must be installed on their vehicles as a safety measure.
他接着表示会有很多司机通不过审批程序，并称自己对新规定以安全为由要求车辆必须安装GPS追踪设备怀有戒心。
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