Advertisement is a kind of informational spreading activity.

广告是一种信息传播活动。

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The Olympic movement is the international sports practice and culture-spreading activity developed under the guidance of specific philosophic thinking and sports theory.

奥林匹克运动是在特定哲学思想和特定体育理论指导下开展的国际性体育实践和文化传播活动。

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Reading is a deep-going and complex mental activity and an important way of spreading information.

阅读是一种深刻而复杂的精神活动，是信息传播的有效手段。

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"Intentionally spreading false rumors or engaging in collusive activity to impact the financial condition of an issuer will not be tolerated and will be vigorously and aggressively investigated, " it said.

FORBES: Magazine Article