单词galactic nucleus
un.: 星系核
网络: 星系内核；银核；银河系核心
星系核
The star to be moving rapidly, perhaps in an orbit around the densely concentrated stars of the galactic nucleus.
这颗星看来正在以高速运动着，其运动轨道大概就围绕着由高度密集的恒星所构成的银河系核心。
In spiral galaxies, majestic winding arms of young stars, gas, and dust rotate in a flat disk around a bulging galactic nucleus.
旋涡星系中，年轻恒星、气体和尘埃构成壮丽的旋臂在一个扁平的圆盘上绕着凸起的星系核心旋转。