rarefy
英 ['re?r?fa?]
美['r?r?,fai]
- vt. 使純化；變稀薄；精選
- vi. 變稀薄；純化
TOEFL
詞態(tài)變化
第三人稱單數(shù):?rarefies;過去式:?rarefied;過去分詞:?rarefied;現(xiàn)在分詞:?rarefying;
中文詞源
rarefy 變稀薄，使高雅
來自 rare,稀薄的，罕見的，-fy,使。引申詞義使精深，使高雅。
英文詞源
- rarefy (v.)
- late 14c., from Old French rarefier (14c.) and directly from Medieval Latin rarificare, from Latin rarefacere "make rare," from rarus "rare, thin" (see rare (adj.1)) + facere "to make" (see factitious). Related: Rarefied.