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单词	nicotinoyl
释义	nicotinoyl noun nic·​o·​ti·​no·​yl ˌnikəˈtēnəwə̇l, -tin- variants or nicotinyl -tēnᵊl plural -s : the radical NC5H4CO− of nicotinic acid Word History Etymology nicotin- + -yl
随便看	airspace reservation airspaces airspeed airspeed head airspeed indicator airspeed meter airspeeds airstair airstairs airstream airstream engine airstream motor airstreams airstrikes airstrip airstrips airt airted airthed airthing airths airtight airtighter airtightest airtightness

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