Noun:

1. the act of cleaning by getting rid of impurities

2. the process of removing impurities (as from oil or metals or sugar etc.)

3. a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites

4. the act of purging of sin or guilt; moral or spiritual cleansing;

   "purification through repentance"
   

refinementn.精致；文雅；改良；精炼；提炼

refiningn.精炼法；改善；匀料动词refine的现在分词.

cleansingn.净化(垃圾)adj.清洁用的动词cleanse的现在分词.

sanitizationn.搞卫生；卫生处理

decontaminationn.净化；排除污染

distillationn.蒸馏

ablutionn.洗身；洗礼；斋戒沐浴

purgationn.净化；洗罪；【中医学】下法

1. Purification of water may be achieved by distillation.
   水的净化可由蒸馏获得。
2. Reading a good book may bring purification to souls.
   读一本好书可以带来心灵的净化。
3. Students are doing an experiment on crude salt purification.
   学生们在做粗盐提纯实验。