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Harvardresearchershavecreatedatough,low-cost,biodegrada...
问题详情:Harvardresearchershavecreatedatough,low-cost,biodegradable(可生物降解的)materialinspiredbyinsects"hardoutershells.Thematerial"sinventorssayithasanumberofpossibleusesandsomedaycouldprovideamo...
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