visual aid
柯林斯詞典
1. N-COUNT Visual aids are things that you can look at, such as a film, model, map, or slides, to help you understand something or to remember information. 直觀教具
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visual aid (visual aids)
劍橋詞典
- something that you are shown , such as a picture , film , or map , in order to help you understand or remember information
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