- 問題詳情:Browncowsmaynotactuallymakechocolatemilk,butpinksilkworms(蠶)doproducepinksilk,ateamofscientistshasdiscovered.Toseeiftheycouldproducepredyedsilk—silkthatcomescolored,straightfromthesource—theteamfedordinarysilkwormsmulberry(桑樹)leavestha...
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