flying clock comparison 飞行钟比较
When they brought the clocks together and made a comparison, the clock on the plane was indeed a few nanoseconds slower than the other clock.
当他们将两个时钟拿到一起比较时，飞机上的时钟确实较另一只慢了几毫微秒。
The modern Metro does the same, arriving exactly when the overhead clock says it will, making my home system (New York) seem rickety and archaic by comparison.
与此处相比，我的家乡纽约的系统看起来是如此的摇摇欲坠和过时。
When they brought the clocks together and made a comparison the clock on the plane was indeed a few nanoseconds slower than the other clock.
当他们将两个时钟拿到一起比较时，飞机上的时钟确实较另一只慢了几毫微秒。
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