Plants are also able to distinguish between specific wavelengths of light that the human eye cannot even see!

植物还能分辨出人类肉眼看不到的特定波长的光！

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And they use face, eye and nose detectors to distinguish facial from non-facial skin.

并且他们运用脸、眼睛以及鼻子探测器来区别面部皮肤与非面部皮肤。

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To the naked eye, the symbols are hard to distinguish, but with a magnifying glass you can see the letters LV behind the right pupil (the left when watching the painting).

用肉眼看来，很难辨识这些符号，不过通过放大镜你可以看到在右边瞳孔(从画作上看是左边)后隐藏的字母lv。

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For hard-core hobbyists, that's not a problem, and may even be a point of pride: It takes a practiced eye to distinguish between a eucrite and a diogenite.

FORBES: Hot Rocks

With the naked eye, it is impossible to distinguish between the pour patterns and puddle configurations caused by an accelerant and those caused naturally by post-flashover.

NEWYORKER: Trial by Fire