只是在过去的30年间，计算器的引入才使手表才变得智能化；而也仅仅是最近的几年中，计时器和卫星技术才运用在了原子钟表里。
Only in the last 30 years have they gotten smarter with the introduction of things like calculators and, more recently, chronographs and satellites tied to the atomic clock.
当卫星经过高空，它发出的无线电信号能被汽车上的计算器辨认。
As a satellite passes overhead, it sends out a radio single that can be detected by a receiver in a car's computer.
这或许就是最近卫星定位才变得流行的原因：尽管导航卫星已有30年的历史，但是廉价的计算器却不然。
Maybe this explains why satellite positioning only became popular a few years ago: although navigation satellites were available for more than 30 years, inexpensive computers were not!
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