"With a laser pulse, you can tap that shell and make it ring like a bell," said physicist Till Rosenband of NIST, who built the existing quantum-logic clock.
“激光脉冲轻拍壳层产生了像铃声一样声音”，国家标准和技术研究所的物理学家Till Rosenband说，现有的量子逻辑时钟是由他开发的。
To break open the eggs tap them gently on the counter until there's a small dent in the shell.
在台上轻敲鸡蛋，直至在蛋壳上出现出现小凹陷。
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