单词	petalodont
释义	petalodont noun pet·​al·​odont ˈpetᵊləˌdänt plural -s : an elasmobranch of the family Petalodontidae Word History Etymology New Latin Petalodontidae
随便看	a step up a step up/down a stitch in time a stitch in time (saves nine) a stitch in time saves nine a stone's throw a stone's throw away a storm in a teacup a stroke of genius a stroke of work A student a sure bet a sure thing a swelled head a tad a taste of someone's own medicine a taste/dose of someone's own medicine a tempest in a teapot a tempo a tergo a thick ear a thing a thing devoutly to be wished a thing like a thing of the past

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