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汉语拼音：rùn miǎo

又称跳秒”。为调整原子时与世界时两者的差异，将标准时刻增加或减少的1秒，常称正闰秒或负闰秒。由于地球自转不均匀而导致两种时间不同步，通过闰秒以解决这一矛盾。

• The rotation of the Earth has been slowing down, so leap seconds keep the clocks and the Earth from getting out of synch with one another.

  地球的转动慢了，闰秒可防止时钟和地球步调不一。

• Deciding when to introduce a leap second is the responsibility of the International Earth Rotation and Reference Systems Service.

  国际地球自转服务组织负责决定何时加减闰秒。

• Users need to make appropriate changes at the application level to handle such dates if it is important to keep track of leap seconds.

  如果有必要将闰秒计算在内，用户需要在应用程序级别上进行适当更改以处理这些日期。

• Well, now there's concern that computer software can't handle the addition of 'leap seconds' as our clocks are continually readjusted.

  现在的问题是“闰秒”现象，当我们的时钟被不断调整时，计算机不能够处理“闰秒”的添加。

• Wednesday's extra second will bring the world's high-tech atomic clocks back into sync with time as defined by Earth's rotation.

  经过周三闰秒之后，全世界的高技术原子钟将再次与地球自转保持同步。

• The last time a leap second was added was in the dying moments of 2005.

  上一次的闰秒发生在2005年的最后时刻。

• The technical problems caused by leap seconds . . . are relatively minor.

  这样看，由闰秒造成的技术问题相对较小。

• When the earth slows down, scientists add leap seconds to our clocks.

  当地球（自转）慢下来的时候，科学家便给我们的时钟添加闰秒。

• Enjoy New Year's Eve's leap second.

  那就好好享受除夕夜的闰秒吧。