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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A new comet is brightening and is now expected to become visible to the unaided eye later this month.

一颗新彗星在变亮，并有望在本月下旬变成肉眼可见。

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Cook predicts the especially bright Comet McNaught C/2009 R1 will put on a worthy show for the unaided eye.

库克预言，这颗极其明亮的麦克诺特彗星C/2009 R1绝对会让我们的肉眼“不枉此看”。

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Sometimes,observers see this as a comet's tail, which can be visible to the unaided eye stretching across the night sky.

VOA: special.2011.02.09

The Andromeda Galaxy is big enough and near enough to be seen by the unaided eye in the star group Andromeda on a dark night.

VOA: special.2009.01.20

This is our working definition where small indicates that is has features too small for the unaided human eye to see.

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It has a 4.8-inch display and can be used for 23 mm wide-angle photos which, according to Samsung, is a wider field of view than the unaided human eye can see without swiveling your head.

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