资料来源 : pyDict

两齿间隙缝很大的

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

Gap-toothed \Gap"-toothed`\, a.
   Having interstices between the teeth. --Dryden.

资料来源 : WordNet®

gap-toothed
     adj : having widely spaced teeth; "his gap-toothed grin"