Thus time and time's relativity are measurable by any hourglass, alarm clock, or atomic clock that can measure a billionth of a second.

因此，时间和时间的相对性可以用任何沙漏、闹钟或原子钟来测量，其中原子钟可测量出十亿分之一秒。

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Thus time and time's relativity are measurable by any hour glass, alarm clock, or atomic clock that can measure a billionth of a second.

因此，时间和时间“相对论可衡量的由任何沙漏，闹钟，或可以衡量一个十亿分之一秒的原子钟。”

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The alarm was generated from within the Atomic Weapons Establishment (AWE) at 05:00 BST last Friday.

BBC: Atomic weapons base false alarm wakes neighbours