将一拿码则秒的时间看作是一段线段的话,第一秒末和第一秒初的区别就是一个线段尾一个线段头的区别。第二秒末到第三秒末是两秒。
你好,喓 的 都 在 啊
haozhou Xiangqiao good romantic,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,
ten Eight shuttle boat twenty-four states,