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“We’re suggesting that the ear evolved out of the skin in order to do more finely tuned frequency analysis, ” adds Wilson, of Beth Israel Deaconess Medical Center in Boston. 她補(bǔ)充說：“我們認(rèn)爲(wèi)耳朵是從皮膚中分化出來，以便更精細(xì)地分析振動頻率。”