N-COUNT
視覺材料（指用于展示或說明的圖畫、表格、影片等）
A visual is something such as a picture, diagram, or piece of film that is used to show or explain something.
例句
Remember you want your visuals to reinforce your message, not detract from what you are saying.
要記住，使用視覺材料是為了使表達的意思更加清楚明白，而不能分散對所講內容的注意力。