Usages of purus
Mater aures pueri videt et dicit: "Aures tuae purae sunt."
Mother sees the boy's ears and says: "Your ears are clean."
Postquam pedes lavit, puer etiam aures lavat, et nunc aures purae sunt.
After he has washed his feet, the boy also washes his ears, and now his ears are clean.
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