negative leap second

例句：

1. 1. Thephysicist calculated the value of a constant using the formula: x = negative leap second / 2π.
   物理学家使用公式x=负跃进秒/2π来计算常数的值。
2. 2.The scientists discovered a new planet by detecting its shadow during a negative leap second.
   科学家们通过在负跃进秒期间探测其影子发现了一个新行星。
3. 3. Due to the negative leap second, the clocks on Earth have advanced by 0.0000000001 seconds since midnight.
   由于负跃进秒，自午夜以来地球的时钟已经前进了0.0000000001秒。