英语词汇visual aid怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	visual aid
释义	visual aidn.（名词） An instructional aid, such as a scale model, filmstrip, or videotape, that presents information visually.直观教具：一种以视觉形式呈现出信息的教学辅助，如比例模型、幻灯片或录相等
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