<p style="font-size: 12px;color:#aaa;">版权引用：<a href="https://avopix.com/photo/393459-head-on-view-of-nasa-s-sr-71b-on-the-ramp-at-the-air-force-s-plant-42-in-palmdale-california-july-24th-1991-original-from-nasa"><span style="font-size: 12px;color:black;">“Head-on view of NASA's SR-71B on the ramp at the Air Force's Plant 42 in Palmdale, California. July 24th, 1991. Original from NASA.”</span> </a>由 <a href="https://avopix.com/author/photos/nasa-source"><span style="font-size: 12px;color:black;">NASA (Source)</span></a> 授权许可 <span><a href="https://creativecommons.org/publicdomain/zero/1.0/deed.zh" target="_blank" style="font-size: 12px;color:black;">CC0 1.0 Universal Public Domain Dedication<img src="" style="display: inline-block;height: 16px;width: auto;"></a></span></p>