备受争议的“呜呜祖拉”加油工具已成为南非世界杯的一大标志，日前，一家网络公司推出了一种据称可消除这种塑料喇叭所发出的噪音的“呜呜祖拉滤声器”。

An online company has begun marketing an "Anti Vuvuzela Filter" that promises to silence the sound of the controversial plastic trumpets that have become the trademark of South Africa's World Cup.

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