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    Can we precisely find out the composition of a given solution?

    Using state-of-the-art technology, can we precisely find out the composition of a solution whose formulation is unknown? If the answer is yes, why does Coca-Cola Co still keep its cola recipe a secret?
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    Why the word AMBULANCE on the emergency vehicle is sprayed reversedly?

    TV news programs show that in some countries and regions the word AMBULANCE (in English, or Spanish, or some other languages) on the emergency vehicle is printed reversedly. Is this just a careless mistake, or is it an established practice with some purpose?
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    Why the word AMBULANCE on the emergency vehicle is sprayed reversedly?

    TV news programs show that in some countries and regions the word AMBULANCE (in English, or Spanish, or some other languages) on the emergency vehicle is printed reversedly. Is this just a careless mistake, or is it an established practice with some purpose?
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