英语词汇“visual aid”是什么意思，“visual aid”的读音、用法及例句翻译-烛光网

词汇	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
随便看	letter carrier lettered lettered letterform letterhead letter heading lettering lettering lettering letterings letterman lettermen letter of credence letter of credit letter of intent letter of marque letter of marque letter-perfect letterpress letter-quality letters letters of administration letters of credence letters of credence letters of marque

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