each moment in history is a fleeting time , precious and unique .( richard nixon , american president ) 历史巨轮飞转

each moment in history is a fleeting time , precious and unique .( richard nixon , american president ) 历史巨轮飞转，分分秒秒的时间都十分宝贵，也独具意义。(美国总统 尼克松. r.)