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- A new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located 280million light years from Earth. 四星系碰撞，约130年前，发现距离地球2.;8亿光年的星系紧凑组发现新的面貌。
- compact group of galaxies 致密星系群
- A large mountain mass or compact group of connected mountains forming an independent portion of a range. 山丘组成山脉的一部分独立的大的山体或连接起来的山体密集群
- Perfect hexagon is the most compact grouping of wires. 精确的六角形是最密实的钢丝束。
- Arif Babul, University of Victoria."Our standard model is that a bound group of galaxies like this should have a lot of dark matter.What does it mean that this one doesn't? 这个激动人心的多可能的世界需要新的物理学并且可能很难与之前提到的子弹星团等的观测结果所协调。
- Thus, the Local Group of galaxies may be surrounded by an extended corona of gas, whose properties are suggestive of both the most diffuse and the densest regions of the IGM. 因此，本星系群（LocalGroupofgalaxies）也许被延伸的气体冕环绕著，其性质则说明它可能既是IGM中最稀薄又是最稠密的区域。
- In fact, among the star forming regions within the Local Group of galaxies, NGC 604 is second in size only to 30 Doradus, also known as the Tarantula Nebula in the Large Magellanic Cloud. 其实，在本星系群中的恒星形成区里，NGC 604是大小排名第二的恒星育婴室，仅次于大麦哲伦云中的剑鱼座30（又被称为毒蜘蛛星云）。
- IC 342 may have undergone a recent burst of star formation activity and is close enough to have gravitationally influenced the evolution of the local group of galaxies and the Milky Way. IC 342最近可能经历一次爆发性的恒星形成活动，它离本星系群和我们的银河系足够近，因此星系的演化受到了本地星系群和银河系重力的影响。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- M33, also known as the Triangulum Galaxy, is a member ofwhat's known as our Local Group of galaxies. M33俗称三角星系，是我们本星系群的重要一员。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
- A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies about 3 million light-years distant. 作为本星系内重要的一员，M33也被命为著名的三角星系，大约距离我们300万光年。
- He looked around the small group of mourners. 他环顾一下那一小群的送葬者。
- M33 is part of what's known as the Local Group of galaxies, and it is gravitationally bound to our home galaxy the Milky Way. M33是已知的本星系群的一部分，而且，其因重力作用而被我们人类所在的银河系所束缚而牵制。
- The group of destroyers damaged the bus. 那群破坏者毁坏了这辆公共汽车。
- A tissue is a group of similar cells which have an identical general function. 组织是一组具有相同的一般机能的类似细胞。
- Grand council for a local group of galaxies 一个有关局部星系团体的重要的会议
- A hut or group of huts for housing ranch workers. 工人棚屋供牧场工人居住的棚屋
