leap second

基本解释

Greenwich Mean Time updated with leap seconds.
用闰表来测定的格林尼治时间。
For one, the leap second occurs in the middle of the day in Asia and Australia, causing a time hiccup during stock trading.
其中一个是，润秒发生在亚洲和澳洲的日间，时间会在货运进行当下“跳针”。
US scientists want to change the current system, which keeps clocks in synch with solar time by adding a leap second every 18 months or so.
美国科学家希望改变现行系统，亦即透过每隔约18个月添增1闰秒，让时钟与太阳时保持一致。
Since 1999 until recently,the two time standards have been in close enough synch to escape any need to add a leap second,NIST said.
该协会说，从1999年开始到最近几年，原子时和天文时一直处于同步状态，所以不需要增加一个闰秒。
Since 1999 until recently, the two time standards have been in close enough synch to escape any need to add a leap second, NIST said.
该协会说，从1999年开始到最近几年，原子时和天文时一直处于同步状态，所以不需要增加一个闰秒。

a second added to or removed from a scale for reckoning time on one particular occasion, to synchronize it with another scale