Studies continue and several unmanned aircraft and several conceptual designs have been unveiled. These include the Shenyang Dark Sword and Zhanying Combat Eagle UCAVs.
几种无人机和概念机已被公布。包括沈阳暗剑和战鹰无人机。
Large North American eagle having a white head and dark wings and body.
北美洲大型鹰，头为白色，翅膀和身体为深色。
A closer look of the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust.
然而，靠近一点看，其中那块明亮的区域，就是一个看向“由尘埃组成的黑暗云层中心”的窗口。
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