The water vapor is spread around the black hole in a gaseous region spanning hundreds of light years.
黑洞的周围则围绕着大量水蒸汽，被水蒸汽覆盖区域的幅度达到了数百光年。
Nearly 3, 000 light-years distant, the relatively faint IC 1396 complex covers a large region on the sky, spanning over 5 degrees.
我们 3000光年的相对而言较为暗淡的IC 1396复合体占据了一大片天穹，扩展角度达5度。
Backbone providers are the Internet players that typically own and lease long-haul fiber-optic cables spanning a large region.
主干网提供商是因特网的玩家，典型的主干网提供商拥有和出租覆盖广阔地区的远程光纤网。
Backbone providers are the Internet players that typically own and lease long-haul fiber-optic cables spanning a large region.
主干网提供商是因特网的玩家，典型的主干网提供商拥有和出租覆盖广阔地区的远程光纤网。
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