If the center of NGC 4258 were a star cluster, the stars would be so closelyspaced that collisions between individual stars would have long ago torn the cluster apart.
如果 NGC 4258 的中心是一个星团，恒星之间的距离会非常近，以至于在很久以前单个恒星之间的碰撞就会把星团撕裂。
2
With respect to translational energy levels, they're really closelyspaced.
对于平动能级，它们的确间隔很近。
3
Case study of paired approach procedure to closelyspaced parallel runways.