重 点
If you purify a substance, you make it pure by removing any harmful, dirty, or inferior substances from it. 净化
verb [vt. 及物动词] 使(某物)洁净,净化;变纯净;洗涤(思想),净化(心灵);提纯,精炼
I take wheat and yeast tablets daily to purify the blood. 我每天服用小麦酵母片来净化血液。