The immense power of public opinion or rumors to influence perceptions, distort truth, or achieve significant impact. It literally means that many mouths can melt metal, symbolizing the collective power of people's words.
面对众口销金的流言蜚语，她选择保持沉默，等待真相大白。
Faced with the powerful rumors that could distort truth, she chose to remain silent and wait for the truth to be revealed.
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