purification n.淨化
【類】purification:dross＝desalinization:salt
提純除去雜質＝脫鹽除去鹽份
refine:purification＝attenuate:rarefaction
提純導致純化＝變稀薄導致稀薄化
【反】adulteration ( n.摻雜 )

【記】pur 源於pure 純化