宇宙天地和自然世界真是丰富多彩、纷繁庞杂，使我们对于那许许多多的难解之谜，不得不密切关注和发出疑问。人们总是不断地去认识它，勇敢地去探索它。虽然今天科学技术日新月异，达到了很高程度，但对于许多奥秘还是难以圆满解答。(The universe and the natural world are really colorful, numerous and complicated, which makes us pay close attention to and question the numerous unsolved mysteries. People always continuously know it and bravely explore it. Although today’s science and technology change with each passing day and have reached a high level, it is difficult for them to satisfactorily solve many mysteries.)