file scan

例句：

1. 1. The company uses a file scanner to quickly check the integrity of its data.
   该公司使用文件扫描仪快速检查其数据完整性。
2. 2. The new scanner is much faster than the old one.
   新扫描仪比旧的快得多。
3. 3. The technician used the file scanner to recover lost files.
   技术员使用文件扫描仪恢复了丢失的文件。