单词	bookholder
释义	bookholder noun : a device that supports a book compare bookrack, bookrest Word History First Known Use 1838, in the meaning defined above
随便看	guanidino guanidins guanido guanido- guanidoacetic acid guaniferous guanine guanines guanins guano guano sack guanophore guanos guanosine guanosine mono guanosine monophosphate guanosine triphosphate guanosines guans Guantánamo guanyl guaná guanás guao guapena

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