visual aid
noun /ˌvɪʒuəl ˈeɪd/
  /ˌvɪʒuəl ˈeɪd/
[usually plural]- a picture, video, etc. used in teaching to help people to learn or understand something
 
| 单词 | visual aid | 
| 释义 | visual aidnoun /ˌvɪʒuəl ˈeɪd/   /ˌvɪʒuəl ˈeɪd/ [usually plural]
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