单词	pyrocotton
释义	pyrocotton noun py·​ro·​cotton "+ : cellulose nitrate containing about 12.6 percent nitrogen and used in smokeless powders compare pyrocellulose Word History Etymology pyr- + cotton
随便看	calendar round calendar stone calendar watch Calendar Wednesday calendar week calendar year calendared calendarers calendarial calendaric calendaring calendarise calendarised calendarises calendarising calendarist calendarized calendarizes calendarizing calendars calender calender man calendered calenderer calenderers

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