英语词汇leap second怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	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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