purification

n.净化

puppy-fat, puppy-love (also `calf-love), purchasable, purchase, purchase price, purchase tax, purchaser, purchasing power, purdah, pure, pure-bred, purebred, puree, purely, pureness, purgation, purgative, purgatorial, purgatory, purge, purify, purism, purist, puritan, puritanical, puritanically, puritanism, purity, purl, purlieu, purlieus, purloin, purple, purple heart, purplish, purport, purpose, purpose-built, purposeful, purposefully,