The microscopic pas DE deux isn't even visible to the naked eye.
这个极微小的双人舞肉眼是看不到的。
It becomes visible to the naked eye every 76 years when it nears the sun.
它每隔76年靠近太阳时，变得肉眼可见。
L the Great nebula of Orion is a glowing nebula just visible to the naked eye.
l猎户座星云是只用肉眼就可以看见的星云。
A great number of these collisions create the light that's visible to the naked eye.
数以万计的这种撞击就形成了我们肉眼所能够看到的这种光。
The pumpkin pollen grain in the middle is0.2mm and just about visible to the naked eye
中间的南瓜花粉有0.2毫米，肉眼刚刚能看见。
Lulin, discovered in July 2007, is now visible to the naked eye in dark, rural skies.
年7月发现的鹿林彗星现在可以在黑暗中的农村天空里用肉眼见到。
The small amount of blood mixed into the stool is usually not visible to the naked eye.
粪便中参杂的少量血液仅凭肉眼是无法看到的。
Ancient man also noticed how the five planets visible to the naked eye twinkled in the night sky.
古代的人们看到肉眼可见的五大行星在夜幕中闪烁。
Some of the most spectacular night skies are visible to the naked eye - although sadly not from the UK.
一些最耀眼的夜空可以用肉眼看到——但很可惜不在英国。
It is 128 light years from Earth, and is just visible to the naked eye in the constellation of Pegasus.
它距地球128光年，在飞马座中刚好能被肉眼可见。
Sometimes, with thick layers of dark clouds hanging in the sky, the sun was hardly visible to the naked eye.
有时天边有黑云，而且云片很厚，太阳出来，人眼还看不见。
Its wavelength is too short to be visible to the naked eye, but you see it working when fluorescent colors glow!
紫外光的波长太短以至于无法用肉眼看到，但是荧光色发光的时候你就能看到它起的效果！
Because these creatures are small and tend to hide beneath leafy plants they are not always visible to the naked eye.
因为这些生物很小而且常常躲在叶子茂密的植物下面，肉眼并不都可以看见。
Because these creatures are small and tend to hide beneath leafy plants, they are not always visible to the naked eye.
因为这些生物很小并且常常躲在叶子茂盛的植物下面，肉眼并不都可以看见。
Its lurch of 0.26 degrees is said to be visible to the naked eye-and if it goes uncorrected could cause the tower to crash.
据说现在大本钟0.26的倾斜度用肉眼都能清晰看到，如果不进行矫正，可能会造钟楼倒塌。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
昴星团金牛星座中的疏散星团，由几百颗恒星组成，其中六颗星用肉眼可看到。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
昴星团：金牛星座中的疏散星团，由几百颗恒星组成，其中六颗星用肉眼可看到。
Because these creatures are small and tend to hide cleath leafyplould like, they aren't without exception visible to the naked eye.
因为这些生物很小并且频频躲在叶子茂盛的植物下面，肉眼并不都可以看见。
The galaxy is visible to the naked eye on moonless nights as a smudge of light and is the most distant object visible without a telescope.
该星系在无月夜的夜晚可由肉眼观测到一个小光斑，它也是不借助望远镜能被肉眼观测的最远天体。
It is in astronomical terms, Neil – it's visible to the naked eye – meaning without using instruments – and it's reachable by spacecraft.
这是一个天文术语，叫做肉眼可见，是指不借助任何设备就可看见，我们乘坐宇宙飞船可以到达火星。
Because a transit of Venus is barely visible to the naked eye, for most of history humans went about their lives oblivious to such events.
因为金星凌日很难用肉眼看见，在人类历史上大部份的时期，人们都不知道有这样的事情。
The worst turbulence is associated with thunderstorms and they are visible to the naked eye or with weather radar which picks up the size of water droplets.
最恶劣的乱流还伴有雷暴雨，肉眼或天气雷达可以发现。天气雷达可以估测出雨滴的大小。
Mr. Mahoney 17)oriented us by pointing out the North Star, the Big and Little Dippers and the constellation Orion, all visible to the naked eye, of course.
马奥尼先生引导着我们，为我们指出北极星、北斗七星、小熊星座和猎户座，当然，这些星座都是我们肉眼可以看见的。
Latent: Left by the transfer of sweat and natural oils from the fingers onto a surface that is smooth enough to hold the print; not visible to the naked eye.
潜在的：手指表面的汗和油脂在一个平滑表面上留下的指纹，肉眼不可见。
Sometimes the individual crystals, with plane faces and sharp edges and corners, are visible to the naked eye, and sometimes they can be seen only under a microscope.
单晶有时用肉眼就能看得到，有时只要在显微镜下才能看得见，这种单晶有着平的晶面和锐利的棱角。
Although Neptune is not among the planets visible to the naked eye, early birds with telescopes in the United States can spot Neptune this month-if you know where to look.
虽然海王星不属于肉眼可见的行星，这个月在美国早起的人们便可以用望远镜看到海王星——如果你知道往哪里看的话。
Currently this star is too faint to be visible with the naked eye, but over the next few months it will start climbing in brightness until it becomes one of the brightest stars in this constellation.
通常这颗恒星亮度非常微弱，因而不能用肉眼直接观察到，但是在接下来的几个月中，它的亮度将不断攀升，直到成为鲸鱼座中最明亮的恒星之一。
About 3,200 long-period comets are known, one of the most famous being Hale-Bopp which was visible to even the naked eye during 1996 and 1997.
大约有3200颗长期的彗星已为人们所知，其中最著名的一颗是海尔-波普彗星，在1996年与1997年间这颗彗星甚至用裸眼就能看到。
About 3, 200 long-period comets are known, one of the most famous being Hale-Bopp which was visible to even the naked eye during 1996 and 1997.
大约有3200颗长期的彗星已为人们所知，其中最著名的一颗是海尔·波普彗星，在1996年与1997年间这颗彗星甚至用裸眼就能看到。
About 3, 200 long-period comets are known, one of the most famous being Hale-Bopp which was visible to even the naked eye during 1996 and 1997.
大约有3200颗长期的彗星已为人们所知，其中最著名的一颗是海尔·波普彗星，在1996年与1997年间这颗彗星甚至用裸眼就能看到。
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