英语词汇“leap second”是什么意思，“leap second”的读音、用法及例句翻译-烛光网

词汇	leap second
释义	leap secondn.（名词） A second of time, as measured by an atomic clock, added to or omitted from official timekeeping systems annually to compensate for changes in the rotation of Earth.闰秒：由原子钟计量的，每年向官方的计时系统中增加或扣除的一秒时间，以补偿地球自转过程中产生的变化
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