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presentation of documentary evidence, material evidence and audio-visual material;
出示书证、物证和视听资料;
youdao
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It can show visual material to a wide audience.
讲座能给广大听众展现视觉材料。
youdao
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Visual material aids the retention of information.
直观材料有助于加强记忆。
《牛津词典》
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Visual material aids the retention of information.
直观材料有助于加强记忆。
《牛津词典》