脑力风暴 Brain storming 重复探索和过滤过程 Repeating the process of exploring and filtering 界定3-4个设计方向 Define 3-4 design directions Idea sketch g.- ToOTH/MODEM OPTION 12806089000203Idea sketch 重复探索和过滤过程 Repeating the process of exploring and filtering 脑力风暴 Brain storming 界定3-4个设计方向 Define 3-4 design directions