craig smith
克雷格•史密斯
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Dr.Craig Smith,the chief executive of Electro Optic Systems, says laser beams fired from the ground could protect astronauts and satellites by targeting space junk that travels at potentially devastating speeds.
VOA: standard.2010.07.24
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