asymptotically flat spacetime

例句：

1. 1. The theory of generalrelativity predicts that spacetime willbecome asymptotically flat asthe universe expands.
   广义相对论理论预测，随着宇宙的膨胀，空间时间将渐近平坦。
2. 2. In this model, thecosmological constant is responsible forcreating an asymptotically flatspacetime.
   在这个模型中，宇宙常数负责创造一个渐近平坦的空间时间。
3. 3.The study of black holes and theireffects on the surrounding spacetime has ledto new insights into the nature of gravity.
   研究黑洞及其对周围空间时间的影响，为理解引力的本质提供了新的见解。