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radius vector

n.
1.a line connecting a satellite to the center of the body around which it is rotating
2.a line connecting a point in space to the origin of a polar coordinate system

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    Idiom of the Day

    have a taste for (something)
    to have a desire for a particular food or drink or experience
    Recently, my friend has a taste for very loud music.



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    Choose an idiom to replace the expression in the brackets:
    My friend has been making money (very rapidly) since she started her new business.

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