Most galaxies in our universe are bound together into clusters that dot the cosmic landscape like urban sprawls, usually centred around one old, monstrous galaxy containing a massive black hole.
我们宇宙中大多数星系聚在一起形成星团，像绵延的城市一样点缀在无垠的太空，通常围绕着一个包含一个巨大黑洞的古老而可怕星系旋转。
We have adopted the method to place a hollow rigidity axle (with hole and ridge) in the bamboo curtain reel to proceed bound drying, which can improve drying velocity and drying quality effectively.
采用竹帘卷内放置有孔棱的空心刚性轴进行束缚干燥，可以有效提高干燥速度和干燥质量；
The identification of an object as a black hole requires the further assumption that no other object (or bound system of objects) could be so massive and compact.
物体确认为一个黑洞需要进一步的没有其它物体(或物体的范围系统)假定可能是如此质量庞大和紧凑的。
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