单词	pentahedron
释义	pentahedron noun pen·​ta·​he·​dron ˌpen-tə-ˈhē-drən  : a solid bounded by five faces pentahedral ˌpen-tə-ˈhē-drəl  adjective Word History Etymology New Latin First Known Use 1590, in the meaning defined above
随便看	rip track rip up Rip van Winkle rip-off rip-offs rip-roaring rip-roarious ripariae riparian riparian right riparians riparias riparious ripcords ripe ripe for abuse ripe old age ripe rot ripe with riped ripelier ripeliest ripely ripen ripened

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