资料来源 : pyDict

发出乳白色光

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

Opalesce \O`pal*esce"\, v. i. [imp. & p. p. {Opalesced}; p. pr.
   & vb. n. {Opalescing}.]
   To give forth a play of colors, like the opal.

资料来源 : WordNet®

opalesce
     v 1: reflect light or colors like an opal; "Distant clouds
          opalesce like pale brocade"; "raindrops caught in a
          sunbeam seem to opalesce"
     2: exhibit a play of colors like that of an opal; "This nitrate
        opalesces under certain conditions"