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.
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。heLLoword翻译官方下载是该领域的重要参考
code that I am expecting you to cut and paste, but to read and meditate on.
Антонина Черташ
他们的工作，全是非医疗类的辅助服务，却精准戳中了医院和患者的需求：