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- 问题详情：Browncowsmaynotactuallymakechocolatemilk,butpinksilkworms(蚕)doproducepinksilk,ateamofscientistshasdiscovered.Toseeiftheycouldproducepredyedsilk—silkthatcomescolored,straightfromthesource—theteamfedordinarysilkwormsmulberry(桑树)leavestha...
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