The dreadful fan-like tumbling of the debris from the sky was all the worse because Columbia carried a woman teacher and a black astronaut among its crew, America in miniature.

• 空中残骸成扇状不断翻滚的可怕景象所造成的影响尤为消极，因为“哥伦比亚”号机组人员包括了一位女性教师和黑人宇航员，是美国的一个缩影。