Inspection technology allows more than 100 million measurements a second to be made across the ribbon, locating flaws the unaided eye would be unable to see.

检测技术可以在一秒钟内对玻璃带进行超过1亿次的测量，从而定位肉眼无法看到的瑕疵。

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Close inspection shows that they are wearing masks with tiny perforations around the eye and nose area for seeing and breathing.

据近距离观察，原来他们戴了面具，眼部和鼻子附近有许多方便观看和呼吸的小孔。

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Most of the inspection process involves checking the company's files and records, as well as naked-eye observation.

大部分的检查过程包含检查一个公司的档案和记录，以及肉眼观察。

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So when the chief inspector appeared before a committee of MPs, whose job is to keep an eye on children's services, they wanted to know how it was that her inspection service got it so wrong?

BBC: Inspecting the inspectors