单词	pit saw
释义	pit saw noun : a handsaw worked by two persons one of whom stands on or above the log being sawed into planks and the other below it usually in a pit Word History First Known Use 1678, in the meaning defined above
随便看	sperma- spermaceti spermacetis spermaduct spermaducts spermagone spermagonia spermagonial spermagonium spermalist Spermaphyta spermaphyta spermaphyte spermaphytes spermaphytic spermaria spermaries spermarium spermary spermat- spermata spermatangia spermatangium spermateliosis spermatheca

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