资料来源 : pyDict

含水加入剂; 持湿剂; 湿润剂

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Humectant \Hu*mec"tant\, a. [L. humectans, p. pr.]
   Diluent. -- n. A diluent drink or medicine. [Obs.]

资料来源 : WordNet®

humectant
     n : any substance that is added to another substance to keep it
         moist