关于legged的知识
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Four legged race
Ahorsetravelsthesamedistanceeveryday.Oddly,twoofitslegstravel30mileseachdayandtheothertwolegstravelnearly31miles.Itwouldseemthattwoofthehorse'slegsmustbeonemileaheadoftheothertwolegs,butofcoursethisc...