. . "108660339"^^ . . . . . "the extended two-dimensional outer boundary of a three-dimensional object; \"they skimmed over the surface of the water\"; \"a brush small enough to clean every dental surface\"; \"the sun has no distinct surface\""@en-us . "surface"@en-us . . "surface"^^ . . . . "the extended two-dimensional outer boundary of a three-dimensional object; \"they skimmed over the surface of the water\"; \"a brush small enough to clean every dental surface\"; \"the sun has no distinct surface\""@en-us . "0"^^ . . . . "08660339-n"^^ . . . . . . . . . . . . . . "0"^^ . . . "108130931"@en-us . .