Quarks, which we also cannot see, are a model to explain the properties of the protons and neutrons in the nucleus of an atom.

夸克同样看不到，但它却是解释原子核中质子、中子性质的理论模型。

youdao

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！

youdao

The man said, "I only wrote the truth, I said what you said, but in a different way." What he had written was, "Today is a beautiful day, but I cannot see it." We're very lucky because we can not only see the beautiful world but also help others. So, enjoy what you have owned today!

这个人说：“我只是写出了真相，我说了你所说的，但方式不同。” 他所写的是：“今天是美好的一天，但我却看不见它。”我们很幸运，因为我们不仅可以看到美丽的世界，也帮助别人看到美丽的世界。所以，享受你今天所拥有的吧！

youdao

She also shows how the chemical Luminol can reveal hidden blood stains that the eye alone cannot see.

VOA: special.2010.05.05

It might, possibly, create 67, 000 that we can see, but it will also destroy some unknown number that we cannot see.

FORBES: If Apple Onshored iPad Production it Would Create 67,000 American Manufacturing Jobs!

Yet a Tamil politician in the newly formed opposition coalition, Mano Ganesan, has told the BBC that opposition parties may support Gen Fonseka as a candidate for a limited term as they cannot see any other way of ousting Mr Rajapaksa - also widely regarded as a Sinhalese nationalist.

BBC: Trouble at the top in Sri Lanka?

That instant coffee I was forced to buy out of a vending machine (see how I suffered?), also not deductible: you cannot deduct the cost of meals that are not part of inpatient care.

FORBES: Paying For Getting Better: What's Deductible?