蚀刻高度不够，防窥区域的角度就会不足，旁边的人努努力还是能够看到屏幕上的文字。
With her hands steady at the controls, her voice calm as she spoke to mission control, Collins piloted the craft through a slow, graceful somersault. With the shuttle's underside now visible, the damage was quickly spotted - and a spacewalk was carried out to repair it.，更多细节参见Line官方版本下载
Фото: Bilal Hussein / AP。关于这个话题，heLLoword翻译官方下载提供了深入分析
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