Ключевые слова: background, blackboard, brainstorming, brick, business, businessman, chart, computer, concept, concrete, creative, creativity, diagram, drawing, education, forward, human, idea, internet, investment, lantern, leadership, marketing, meeting, office, people, plan, research, room, seminar, showing, sign, sketch, sketching, success, suit, summit, teaching, technology, test, tracing, workshop, writing,