1、To catch Saturn, the farthest world that you can easily see with theunaided eye, you must be willing to get up an hour or more before sunrise.(如果要观测土星，且想用肉眼就看到这个最遥远的星球，你得心甘情愿的在日出一个小时更甚前起床。)
2、For starters, try scanning for the Andromeda galaxy with theunaided 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。)
3、This fungus can just be detected by theunaided eye.(这种真菌只用肉眼就能检查出。)
4、That comet is invisible to theunaided eye.(那颗彗星只用肉眼是看不到的。)
5、A new comet is brightening and is now expected to become visible to theunaided 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。)
6、But far behind these Earthly structures are many sky wonders that are invisible to theunaided eye, such as the bright waxing moon inside the arch.(但是在这些地质结构后面更远处，是许多直接用肉眼无法看到的天空奇景，比如像拱形内皎洁的月亮。)
7、The Shield is not big, but it provides some very nice views in dark skies with theunaided 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。)
8、Inspection technology allows more than 100 million measurements a second to be made across the ribbon, locating flaws theunaided 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。)
9、Gross crystalline imperfections like twinning are apparent to theunaided eye.(粗的晶体不完整性，如孪生体可用肉眼看出。)
10、Barnard's Loop is too faint to be identified with theunaided eye.(巴纳德环太昏暗以致肉眼无法辨认。)
11、Saturn is the farthest world that you can easily see with theunaided eye.(木星是我们能用肉眼看到的最远的星星。)
12、Inclusions in I1 diamonds often are seen to theunaided eye.(I1等级的钻石常含有肉眼可见的内含物。)
13、Binoculars help out with the search, although both worlds are actually visible to theunaided 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。)
14、The above spectacular picture of the Milky Way arch, however, goes where theunaided 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。)
15、If you can't see the Andromeda galaxy with theunaided eye, try binoculars.(如果你用肉眼看不到仙女座星系的话，试试望远镜。)
16、Most comets are extremely faint objects far below the limit of theunaided eye.(大多数彗星都是很黯淡的物体，远非肉眼可见。)
17、Cook predicts the especially bright Comet McNaught C/2009 R1 will put on a worthy show for theunaided 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”。)
18、Golden Saturn is the 6th planet outward from our sun and the farthest world that you easily see with theunaided eye.(土星是太阳系中游离之外的第六个行星，也是我们肉眼所能轻易看到的最远的地方。)
19、The Pleiades cluster is often called the Seven Sisters, though most people can only see six Pleiades stars with theunaided 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。)
20、SI2 Slightly Included: Inclusions are visible under 10x magnification, and may be visible with theunaided 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。)
21、Some stars are quite visible to theunaided eye.(有些星星肉眼都看得很清晰。)
22、When seen with theunaided 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。)
