单词	paper-train
释义	paper-train verb pa·​per-train ˈpā-pər-ˌtrān  paper-trained; paper-training; paper-trains transitive verb : to train (an animal, such as a dog) to defecate and urinate on paper indoors Word History First Known Use 1971, in the meaning defined above
随便看	Naidae naides Naididae Naidomorpha Naidu naif naifer naifest naiffer naiffest naifs naig naigue naik naikies naikis Naikpod naiks nail nail (down) nail apron nail bed nail bit nail bone nail down

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