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optical disk

n.
1.a disk coated with plastic that can store digital data astiny pits etched in the surface

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Word of the Day

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  • optical disc
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    Idiom of the Day

    mark down (a price) or mark (a price) down
    to lower the price of something
    The store decided to mark down the prices of their winter coats.



    1.
    Choose an idiom to replace the expression in the brackets:
    The baby was (fast asleep) when his parents looked in the room.

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