| 词汇 | retinal scanner |
| 释义 | retinal scannerComputers ˌretinal ˈscanner noun [countableC] computer equipment that is used to examine someone’s retina in order to identify them. Retinal scanners are used by the police and immigration officials at some airports to check the information on someone’s passport or ID card. 视网膜扫描仪 |
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