early 14c., "free from spiritual pollution," from Old French purefier "purify, cleanse, refine" (12c.), from Latin purificare "to make pure," from purus "pure" (see pure) + root of facere "to make" (see factitious). Meaning "free from extraneous matter" is recorded from mid-15c. Related: Purified; purifying.
权威例句
1. I take wheat and yeast tablets daily to purify the blood.
我每天服用干酵母片以净化血液。
2. One tablet will purify a litre of water.
一丸即可净化一升水。
3. They open the windows to purify the air of the room.
他们打开窗户清涤室内空气.
4. The old people in the mountains plant lindes to purify the forest.