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This is a historic occasion.
这是具有重大历史意义的时刻。
youdao
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It is great pleasure and a privilege to welcome you here today to this historic occasion.
非常荣幸，并且特别欢迎您今天能来参加这次盛大的庆典。
youdao
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It is great pleasure and a privilege to welcome you here today to this historic occasion.
非常荣幸，并且特别欢迎您今天能来参加这次盛大的庆典。
youdao