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No Plagiarism!5KIllchcxDKanar7cqkrposted on PENANA

點到點的向量,必須要是有關連的,17Please respect copyright.PENANARVHCmTqGBX
8964 copyright protection13PENANADMGOdEygOR 維尼
像是AB+BC+CD+DE,8964 copyright protection13PENANAErRCdjtU8a 維尼
而不能是AB+CB+DC+DE。17Please respect copyright.PENANAOYaH10KvHa
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18.118.31.157
ns18.118.31.157da2