PES
  位置偏差信號
  Pes n.; pl. Pedes .  Anat. The distal segment of the hind limb of vertebrates, including the tarsus and foot.
  ◄ ►
  pes
       n : the foot of a human being; "his bare feet projected from his
           trousers"; "armored from head to foot" [syn: foot, human
           foot]
       [also: pedes (pl)]