在这个原子钟的装置里，它们还是太不稳定了，不能靠自身确保时间。

At the esoteric edge of the timekeeper's craft, they are too wobbly to keep time by themselves.

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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。

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

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两个实验的重点是量子铝原子钟，它利用单一铝离子的震荡来精准测量时间的流逝。

The key to both experiments is the quantum logic atomic clock, which USES the oscillation of a single aluminium ion to maintain precise timing.

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