Behind the soldier is the Guardian's first staff photographer, Walter Doughty, working under fire with a heavy glass-plate camera.

这名士兵的背后是《卫报》历史上第一位专职摄影师Walter Doughty，他抱着一部沉重的玻璃钢板相机在战火中工作。

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Taking and developing photos using the so-called "wet-plate" process was a meticulous, multi-step procedure that required more than one "camera operator" and lots of chemicals and equipment.

以用被称为“湿盘法”冲洗照片为例，这一步骤需要多名照相操作员一丝不苟的进行繁复的操作，其间需要许多化学试剂和器材。

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The police department has installed an extensive camera system, licence-plate readers and air monitors.

警察局已经安装了一套全面的摄像系统，车牌阅读器和空气监测器。

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The Magellan Wireless Back-Up Camera kit comes complete with a license plate mountable camera, transmitter, wireless receiver, vehicle power adapter, installation hardware, and instructions.

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And license-plate readers mounted on patrol cars scan traffic and parking lots, comparing a list of known stolen plate numbers to what the camera sees.

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After the camera system captured each driver's license plate, the bill for the toll would be assessed electronically, with the assistance of motor-vehicle departments from around the country.

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