“ambulacrum”的英文意思

单词 ambulacrum 释义 ‖ ambulacrum|mbjulekrm, -krm|Pl. -a.[L., a walk, avenue; f. ambul-re to walk.]An ‘avenue’ or double row of pores for the protrusion of the ambulacral tubes or tube-feet, of which five series radiate from the apex of an echinoderm....