Most stars are not visible to the naked eye.
大多数星星肉眼看不见。
It was not visible to the naked eye.
肉眼却无法看到。
The star is visible to the naked eye.
这颗星星肉眼可以看见。
Those stars are visible to the naked eye.
这些星星肉眼看得见。
This star is not visible to the naked eye.
这颗星肉眼看不见。
The planet should be visible to the naked eye.
这颗行星肉眼就能看得见。
Those stars are hardly visible to the naked eye.
那些星用肉眼几乎看不见。
Porosity may, or may not, be visible to the naked eye.
孔隙率可能或可能不会，是肉眼可见的。
The planet Mars will be visible to the naked eye all week.
整周都可以用肉眼观察到火星。
And its greenish blue glow may be visible to the naked eye.
可能用肉眼就能看到它绿蓝色的辉光。
And its greenish blue glow may be visible to the naked eye.
可能用肉眼就能看到它绿蓝色的辉光。
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