单词	royal pendulum
释义	royal pendulum noun : a clock pendulum long enough to beat seconds Word History First Known Use 1694, in the meaning defined above
随便看	Boidae boidaes Boiga boigid Boigidae Boii boil boil away boil disease boil down boil off boil out boil over boil smut boil up boilable Boileau-Despréaux boiled boiled dinner boiled down boiled oil boiled over boiled shirt boiled sweet boiled sweets

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