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refracting telescope

n.
1.optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece

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    Idiom of the Day

    sitting on top of the world
    feeling very good or happy
    I was sitting on top of the world after I heard from my friend.



    1.
    Young children should not sit close (a) to the TV set (b) / as it affects on their eyes. (c) / No error (d)

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