二: two趾: toe树懒: bradypod; bradypode; sloth二趾树懒科: megalonychidae二趾树懒属: two-toed sloths二趾树懒亚科: two-toed sloths两趾树懒: unau三趾树懒: pale-throated sloth第二趾: digitus secundus pedis; second digit of foot树懒；树獭: sloth树懒科: three-toed sloth; tree sloths树懒属: tree-toed sloths三趾树獭: a.i第二趾背面: dorsal surface of second toe第二趾皮肤: skin of second toe第二趾收肌: cundi二趾畸形: didactylism二趾食蚁兽: silky anteater褐喉树懒: brown-throated sloth; grey three-toed sloth霍氏树懒: hoffmann's sloth树懒抱树滚: sloth grip roll树懒亚目: sloth鬃毛树懒: maned sloth第二趾内侧面: medial surface of second toe第二趾外侧面: lateral surface of second toe
