单词	butanal
释义	butanal noun bu·​ta·​nal ˈbyütəˌnal, -ütᵊnˌal plural -s : normal butyraldehyde Word History Etymology butane + -al First Known Use 1894, in the meaning defined above
随便看	turn the trencher turn the trick turn to turn to account turn to good account turn traitor turn tricks turn turtle turn under turn up turn up one's nose turn up trumps turn upon turn upon (something) turn upon something turn upside down turn-furrow turn-in turn-key job turn-on turn-ons turn-tree turnable turnabout turnabout is fair play

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