space-time transformation

例句：

1. 1. The space-time transformation of the universe is afascinating topic.
   宇宙的时空转换是一个引人入胜的话题。
2. 2. The scientist made a significant breakthrough in the field of space-timetransformation.
   这位科学家在时空转换领域取得了重大突破。
3. 3. The theory of space-time transformationhas been studied for decades.
   时空转换理论已经研究了几十年。