scanner

指纹扫描仪正在读取指纹。

The fingerprint ___scanner is reading the print.

我需要用扫描仪把这些照片保存到电脑里。

I need to use the ___scanner to save these photos on my computer.

他正在用无线电扫描器搜索附近的航空频段信号。

He's using a ___scanner to search for nearby aviation frequency signals.