rarefying

英['reərɪfaɪɪŋ] 美['reərɪfaɪɪŋ]
  • 抽稀
  • fowl n.禽;禽肉v.猎捕野禽
  • rare adj.罕见的;珍贵的;煎得嫩的
动词 rarefy:
  1. lessen the density or solidity of

  2. make more subtle or refined

  3. weaken the consistency of (a chemical substance)