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coefficient of reflection

n.
1.the fraction of radiant energy that is reflected from a surface

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    Idiom of the Day

    tip the scales at (something)
    to weigh a certain amount
    The wrestler tipped the scales at over 200 kilograms.



    1.
    Choose an idiom to replace the expression in the brackets:
    The girl`s mother (was very upset) when the child came home with her new dress muddy.

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