单词	butanoic acid
释义	bu·ta·no·ic acid (by′tə-nōĭk) n. See butyric acid. [BUTAN(E) + -OIC.]
随便看	referentially referral referred pain referrer refill refinance refinancer refine refined refinement refiner refinery refinish refinisher refit reflag reflect reflectance reflecting telescope reflection reflectional reflection nebula reflective reflectively reflectiveness

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