A laser scanner takes measurements of the Mona Lisa in this undated handout photo. 激光扫描仪被用于这张位表明日期的蒙娜丽莎照片。
Self-checkout counters at the grocery store, complete with laser scanners to read bar codes, are starting to replace human cashiers. 在商店，配有读取条形码的激光扫描仪的自助结账柜台正在开始取代人类收银员。
