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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. 直观教具
As a visual aid for his essay.
为他的论文提供视觉帮助。
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What does each visual aid show?
每个视觉帮助显示什么内容？
Your slide show is just a visual aid.
你做的幻灯片只是观众视觉上的辅助。
To start, Mr. Picciolo brought out Mets minor league shortstop Sean Kazmar as a visual aid.
WSJ: Pro Ball Baseball Clinic Weekend
Even the glasses he wore became an item of armor instead of a visual aid.
NEWYORKER: I Spy
By the way, the illustration below is a handy visual aid in understanding the differing dangers associated with sources of radiation.
FORBES: EPA Sounds an 'All-Clear' (so far) for Western U.S.
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