The magistrate, after a wary observation of the darkness- into which, nevertheless, he could see but little farther than he might into a mill-stone- retired from the window.

总督在小心翼翼地向暗中观察一番之后，也缩回了身子，当然，在这般黑夜中他看不了多远，比起要望穿一块磨石相差无几。

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The observation window on the door is made of double-layer tempered glass, the material heated in the oven can be observed clearly, meanwhile, the thermal insulation is well.

箱门观察窗为双层钢化玻璃结构，能清晰观察箱内加热的物品，又有良好的隔热效果。

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There was, of course, no observation window.

当然，那儿根本没有什么观察窗。

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However, when the same warder looked in his cell through an observation window just over an hour later, she saw him hanging.

BBC: Aylesbury Young Offender Billy Spiller 'like a tornado'

At Devens, he is locked inside a 10-by-10-foot cell with a steel door, a slot for food and an observation window, a prison spokesman said Sunday.

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"Fortunately, the largest patch of open water is in front of the observation window where visitors can see the swans and ducks at feeding time, " a spokesperson for the centre said.

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