light pen

美

英

权威英汉双解

light pen

1.	（用于向计算机输入信息的）光笔a piece of equipment, shaped like a pen, that is sensitive to light and that can be used to pass information to a computer when it touches the screen

2.	光笔；条码识读器a similar piece of equipment that is used for reading barcodes

随便看

英汉词典包含292483条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。