单词	underbed
释义	underbed noun : a mass or layer underlying or supporting something laid over it specifically : a mattress laid under a feather bed Word History Etymology under entry 3 + bed
随便看	isoprenes isoprenoid isopropanols isopropenyl isopropoxide isopropyl isopropyl alcohol isopropyl ether isopropylate isopropylidene isopropyls isoproterenol isoproterenols Isoptera isopterae isopteras isopterous isoptins isopulegol isopycnic isopyra isopyrums isoquercitrin isorhythm isorhythmic

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