为什么世界需要闰秒？
不过闰秒是个新事物。
上一次的闰秒发生在2005年的最后时刻。
The last time a leap second was added was in the dying moments of 2005.
下一次的闰秒将出现在今年末。
举个例子，英国就表示闰秒应该保留。
Britain, for example, has said that the leap second should stay.
今年，全世界的计时员将自1972年以来第二十四次增加闰秒。
This year, the world’s timekeepers will add its 24th leap second since 1972.
今年，全世界的计时员将自1972年以来第二十四次增加闰秒。
This year, the world's timekeepers will add its 24th leap second since 1972.
今年，全世界的计时员将自1972年以来第二十四次增加闰秒。
This year, the world's timekeepers will add its 24th leap second since 1972.
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