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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.

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。

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At the US Naval Observatory in Washington, its newest atomic clock is getting a climate-controlled room of its own for the first time.

在位于华盛顿的美国海军天文台，这里最新的原子钟首次得到了一个拥有空调的专用房间。

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Jerrold Zacharias at the Massachusetts Institute of Technology developed a practical atomic clock around the same time that Louis Essen and John Parry established the first atomic clock at the National Physical Laboratory in Teddington, west of London.

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That effectively means, for a few hundred bucks, Williams can turn it into an atomic clock that he could slip into his pocket.

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Inside, Williams explains, is a receiver tailored to make use of a signal from an atomic clock carried by a global positioning system satellite.

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