To catch Saturn, the farthest world that you can easily see with the unaided eye, you must be willing to get up an hour or more before sunrise.(如果要觀測土星，且想用肉眼就看到這個(gè)最遙遠(yuǎn)的星球，你得心甘情愿的在日出一個(gè)小時(shí)更甚前起床。)

For starters, try scanning for the Andromeda galaxy with the unaided eye or binoculars.(對于初學(xué)者，可以嘗試用肉眼或者雙眼望遠(yuǎn)鏡來尋找仙女座星系。)

This fungus can just be detected by the unaided eye.(這種真菌只用肉眼就能檢查出。)

That comet is invisible to the unaided eye.(那顆彗星只用肉眼是看不到的。)

A new comet is brightening and is now expected to become visible to the unaided eye later this month.(一顆新彗星在變亮，并有望在本月下旬變成肉眼可見。)

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.(但是在這些地質(zhì)結(jié)構(gòu)后面更遠(yuǎn)處，是許多直接用肉眼無法看到的天空奇景，比如像拱形內(nèi)皎潔的月亮。)

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，但如果天氣晴朗，你用眼睛，和雙筒式望遠(yuǎn)鏡就很容易觀測到它。)

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.(檢測技術(shù)可以在一秒鐘內(nèi)對玻璃帶進(jìn)行超過1億次的測量，從而定位肉眼無法看到的瑕疵。)

Gross crystalline imperfections like twinning are apparent to the unaided eye.(粗的晶體不完整性，如孿生體可用肉眼看出。)

Barnard's Loop is too faint to be identified with the unaided eye.(巴納德環(huán)太昏暗以致肉眼無法辨認(rèn)。)