单词	lubber line
释义	lubber line noun : a fixed line on the compass of a ship or airplane that is aligned with the longitudinal axis of the vehicle Word History First Known Use 1858, in the meaning defined above
随便看	umbellar umbellas umbellate umbelled umbellet umbellets umbelli- umbellic acid umbellifer umbelliferaes umbelliferous umbellifers Umbelliflorae Umbellula umbellulariae umbellularias umbellulate umbellule umbellules umbelluliferous umbellulone umbels umber umbered umberer

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