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There are big brown spheres moving at the top of the board .
有大棕球运动在顶部的董事会。
youdao
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Dr. Alan Brown, board member of Sias Foundation, gives a speech;
美国西亚斯董事基金会艾伦布朗博士讲话；
youdao
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Dr. Alan Brown, board member of Sias Foundation, gives a speech;
美国西亚斯董事基金会艾伦布朗博士讲话；
youdao