septuple space

例句：

1. 1. The octagon is the shape of a septuple.
   八边形是七分之一的形状。
2. 2.The space between the stars is septuple to the distance between them.
   星星之间的空间是它们距离的七分之一。
3. 3.The scientist used a septuplet to measure the distance between Earth and Mars.
   科学家使用一个七分之一来测量地球和火星之间的距离。