If you drive your car alongside a railroad track, a train coming at you will seem to be moving much faster than if you turned around and followed it in the same direction.

假如你驱车沿着一条铁路的轨道行驶，那时如果一列火车迎面驶来，你就会感到这列火车行驶得要比汽车掉过头来跟着火车行驶要快得多。

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How can companies keep track of the data coming in or leaving the company via these devices?

那些公司如何能够追踪通过这些设备进出公司的数据呢？

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Absorbed in their play, they don't notice the train coming down the track towards them.

他们玩得很投入，没有注意到朝他们冲过来的火车。

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"It's best described as a tsunami of obesity-related morbidities that's coming down the track in just five to 10 years, " Dr Ryan said.

BBC: 'Tsunami' of obesity-related disease warning for NI

The Blade Runner, as he's known, described coming onto the track and seeing his 89-year-old grandmother in the stands.

WSJ: Menu

Its first album came out only on 8-track back in 1973, with a proper release coming 18 years later under the appropriate title More a Legend Than a Band.

NPR: The Flatlanders On Mountain Stage