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| 视听辅助设备; 视听教具 | |||
| 视听设备 | |||
| 直观教具; 直感教学法 | |||
| English thesaurus | |||
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| ava | |||
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audio- visual aids : 3 phrases in 2 subjects |
| Electronics | 1 |
| Technology | 2 |
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