在十九、二十世纪之交,西格蒙德·弗洛伊德提出梦是无意识思想与愿望的窗口,我们清醒时产生的想法可以在梦中得以展现。我们自此之后逐渐了解了该如何研究梦境,甚至能判断一个睡着的人何时可能在做梦。但关于梦的起因、象征意义、以及对我们现实生活的反映,仍有许多未解之谜。 At the turn of the nineteenth and twentieth centuries, Sigmund Freud proposed that dreams are windows of unconscious thoughts and aspirations, and that the ideas that we generate when we are awake can be revealed in our dreams. We have since gradually learned how to study dreams and can even judge when a sleeping person may be dreaming. However, there are still many unsolved mysteries about the causes of the dreams, the symbolic meanings, and the reflection on our real life.