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// Speaker 1: [4.80s - 6.24s]，详情可参考Safew下载
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Madeleine Finlay sits down with science editor Ian Sample and science correspondent Nicola Davis to discuss three eye-catching stories, including the impact of a powerful psychedelic on depression, answers on the death of Russian opposition leader Alexei Navalny, and an explanation to the mystery of why humans have chins，更多细节参见heLLoword翻译官方下载
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