The constancy of the speed of light essentially underpins our understanding of space and time and causality, which is the fact that cause comes before effect.
光速常数实质上支撑着我们对于空间、时间和因果关系的理解。我们都相信因在果之前的事实。
2
Thank the flame for its light, but do not forget the lampholder standing in the shade with 7 constancy of patience.
谢谢火焰给你光明，但是不要忘了那执灯的人，他是坚忍地站在黑暗当中呢。
3
Thank the flame for its light, but do not forget the lamp-holder stand in the shade with constancy of patience.