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。
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。
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/2009R1绝对会让我们的肉眼“不枉此看”。
This glittering metropolis of stars is easily found in the winter sky in the constellation Hercules and can even be glimpsed with the unaided eye under dark skies.
这座由群星组成的不夜城位于武仙座中，在冬季的夜空中很容易就可以找到，甚至在漆黑的夜里可以直接用肉眼观察到。
That comet is invisible to the unaided eye.
那颗彗星只用肉眼是看不到的。
Some stars are quite visible to the unaided eye.
有些星星肉眼都看得很清晰。
Inclusions in I1 diamonds often are seen to the unaided eye.
I1等级的钻石常含有肉眼可见的内含物。
Barnard's Loop is too faint to be identified with the unaided eye.
巴纳德环太昏暗以致肉眼无法辨认。
Most comets are extremely faint objects far below the limit of the unaided eye.
大多数彗星都是很黯淡的物体，远非肉眼可见。
Most comets are extremely faint objects, far below the limit of the unaided eye.
大多数彗星都是很黯淡的物体，远非肉眼可见。
For starters, try scanning for the Andromeda galaxy with the unaided eye or binoculars.
对于初学者，可以尝试用肉眼或者双眼望远镜来寻找仙女座星系。
The Shield is not big, but it provides some very nice views in dark skies with the unaided eye or binoculars.
盾牌座并不大，但如果天气晴朗，你用眼睛，和双筒式望远镜就很容易观测到它。
Binoculars help out with the search, although both worlds are actually visible to the unaided eye in a clear sky.
虽然两颗星体在明净的天空都能够用肉眼看到，但是用一副双筒望远镜能更好观测。
When seen with the unaided eye from the earth, the moon looks like a smooth globe with dark and light patches of gray.
从地球上用裸眼看月球，月球就象个光滑的球体，上面带著些深灰和浅灰色的斑块。
The Pleiades cluster is often called the Seven Sisters, though most people can only see six Pleiades stars with the unaided eye.
通常人们都称昴宿星团为七姐妹，尽管人们凭肉眼最多只能看见六颗昴宿星团的星星。
SI2 Slightly Included: Inclusions are visible under 10x magnification, and may be visible with the unaided eye. A good diamond value.
SI同样分成1,2两级，意指瑕疵在10倍放大率之下可见，并且在肉眼之下也可能被看到。也算是比较不错的钻石。
Quite a large number of comets are discovered every century, but most of them are extremely faint objects, far below the limits of the unaided eye.
每一个世纪都发现相当多的彗星，但大多数彗星都是非常微弱的天体，远不能为肉眼所见。
But far behind these Earthly structures are many sky wonders that are invisible to the unaided eye, such as the bright waxing moon inside the arch.
不过再往后，就是很多令人震惊的太空奇观，它们用裸眼是看不到的，例如拱形结构里的那轮明亮的盈月。
Light is generally defined as the sector of the electromagnetic spectrum between the infrared and ultraviolet sectors that can be seen with the unaided eye.
光一般被定义介于红外和紫外之间、可被裸眼看到的电磁波谱的一部分。
The faintest star you can see with your unaided eye is about sixth magnitude (from dark skies) whereas the brightest stars are magnitude zero (or even a negative number).
你用肉眼所能看到的最暗的星的亮度值大约是第6级(如果是黑夜的话)，而最亮的星的亮度值是0(更有甚者其亮度值为负)。
The faintest star you can see with your unaided eye is about sixth magnitude (from dark skies) whereas the brightest stars are magnitude zero (or even a negative number).
你用肉眼所能看到的最暗的星的亮度值大约是第6级(如果是黑夜的话)，而最亮的星的亮度值是0(更有甚者其亮度值为负)。
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