本周三晚23点59分59秒(美国东部时间早6点59分59秒)，全世界所有的原子钟会把这一天拨慢一秒。

Eastern time, atomic clocks around the world will add one second to the day.

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这些原子钟是全球计时的标准。

These clocks became the standard for global timekeeping.

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结果实验表明铯原子钟慢了很小的一个时间单位。

Experimental results show that the slow cesium atomic clock time a very small unit.

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原子钟计时可以精确到百万分之一秒。

The atomic clock is accurate to one millionth of a second.

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在小尺度上，原子钟噪声是完全随机的变化特征。

The random variation in atomic clock noise is presented at small scale.

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在小尺度上，原子钟噪声是完全随机的变化特征。

The random variation in atomic clock noise is presented at small scale.

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