在石板黑板上进行创意构思，使用德语单词“问题”(Problem)、“分析”(Analyse)、“解决方案”(Lösung) 库存例证 在石板黑板上进行创意构思，使用德语单词“问题”(Problem)、“分析”(Analyse)、“解决方案”(Lösung)
Chalk drawn light bulb with glowing rays on blackboard surface represents new idea inspiration creativity solution and innovation 库存例证 chalk drawn light bulb with glowing rays on blackboard surface represents new idea inspiration creativity solution and innovation
Hand drawn maze on blackboard straight line solution to exit simplifying complex process fast concept clever idea for easier 库存例证 hand drawn maze on blackboard straight line solution to exit simplifying complex process fast concept clever idea for easier
