| 词汇 | lightpen |
| 释义 | light pen noun [countable] (it 信息技术) 1.a piece of equipment, shaped like a pen, that is sensitive to light and can be used to pass information to a computer when it touches the screen （用于在电脑输入信息的）光笔2.a similar piece of equipment that is used for reading bar codes 条码识读器；光扫描器 |
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