Contaldi concedes that the OPERA team may have made more of an effort to synchronize its clocks than it elucidated in the first draft of the paper.

卡洛·康泰迪承认，OPERA团队可能在论文第一稿中所阐明的基础上，作了更多的努力来同步时钟。

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But Contaldi says that GPS synchronization is not nearly that accurate, because GPS satellite signals are themselves subject to gravitational time dilation.

然而卡洛·康泰迪说，用GPS人造卫星来同步时钟，远远达不到这个准确度，这是因为GPS人造卫星的信号本身也受到重力时间膨胀效应的影响。

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"I think there are significant questions as to whether or not their clocks were synchronized correctly," Contaldi told Life's Little Mysteries, a sister site to LiveScience.

“我认为他们所采用时钟能否正确地同步，存在着明显的问题，”卡洛·康泰迪对LiveScience的一个姐妹站点《生活中的小秘密》说。

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