单词	sweet fern
释义	sweet fern noun : a small North American shrub (Comptonia peregrina) of the wax-myrtle family with aromatic leaves Word History First Known Use 1654, in the meaning defined above
随便看	operagoers operagoing operagoings operance operancy operand operands operant operant conditioning operantly operants operas operatable operate operated operates operatic operatically operatics operating operating room operating system operating table operating theatre operation

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