全部

1·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。

2·That comet is invisible to the unaided eye.

那颗彗星只用肉眼是看不到的。

3·Some stars are quite visible to the unaided eye.

有些星星肉眼都看得很清晰。

4·This fungus can just be detected by the unaided eye.

这种真菌只用肉眼就能检查出。

5·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。

6·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。

7·Saturn is the farthest world that you can easily see with the unaided eye.

木星是我们能用肉眼看到的最远的星星。

8·If you can't see the Andromeda galaxy with the unaided eye, try binoculars.

如果你用肉眼看不到仙女座星系的话，试试望远镜。

9·Gross crystalline imperfections like twinning are apparent to the unaided eye.

粗的晶体不完整性，如孪生体可用肉眼看出。

10·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。

肉眼

1·The above spectacular picture of the Milky Way arch, however, goes where the unaided eye cannot.

然而以上这张弧状银河的壮观的图片让我们达到了肉眼看不到的界限。

2·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。

3·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”。

4·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。

5·Gross crystalline imperfections like twinning are apparent to the unaided eye.

粗的晶体不完整性，如孪生体可用肉眼看出。