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pervaporation

n.
1.the concentration of a colloidal solution whose colloid will not pass through a semipermeable membrane

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    Idiom of the Day

    make a pitch (for someone or something)
    to attempt to promote or sell or advance someone or something
    The city made a pitch for more money to help build a new sports stadium.



    1.
    S1: Why then, do sharks attack?
    S6: Attacks of this kind may be generated by a, swimmer who unwitting~y interrupts a courting procedure, trespasses in a shark's territory and cuts off its escape route.

    P: "The only way s shark can warn you is with its mouth and teeth," says Baldridge.
    Q: In murky water it may simply be a case of mistaken identity.
    R: Snork bumps and open - mouthed slashings are ways of trying to frighten you off.
    S: But the most persuasive explanation is that they perceive their victim as a threat.

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