单词：gyrostat
of a fly wheel fixed inside a rigid case to which is attached a thin
flange of metal for supporting the instrument. It is used in studying
the dynamics of rotating bodies.
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By Nico Colombant World Health Organization officials say the northern Nigerian state of Kano will start a catch-up polio immunization campaign Saturday, ending an 11-month religious-led boycott. The
VOA2004（下）--健康科技
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英语单词大师-Word Master
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好听的英文歌曲
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乔布斯传
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乔布斯传
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乔布斯传