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parabolic reflector

n.
1.a concave reflector used to produce a parallel beam when the source is placed at its focus or to focus an incoming parallel beam

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    Idiom of the Day

    nothing to it
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    There was nothing to it and I was able to fix the television in about ten minutes.



    1.
    He took out the spare tyre (a) / and was very disappointed (b) / when he was discovered (c) / that this tyre was also punctured. (d) / No error (e)

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