walking leg

• 步行足,步足

walking leg的用法和样例：

例句

1. The ratios of the length to width of the propodus of the fourth leg in the three kinds of mitten crabs were identical or near to those of taxonomic samples.
   三种绒螯蟹的第四步足前节长宽比值，与其分类标本吻合或基本吻合。