权威例句
Pinfeather toolPinfeather pickerHi-sky! : the ups and downs of a pinfeather pilotLucy's PinfeathersPinfeathers for the Ruptured Duck: ReplyPinfeathers for the Ruptured DuckRELIABLITY OF DETERMINING ADULTS FROM JUVENILE DUCKS BY PRESENCE OR ABSENCE OF NOTCHED TAIL FEATHERS IN VARIOUS SPECIES OF NORTH AME...Molt Chronology of Northern Pintails in CaliforniaFeather cutter and feather imping pinHighlights from Multiple Chemical Sensitivity Awareness Month 2010
