(NAmEalsotext) abookthatteachesaparticularsubjectandthatisusedespeciallyinschoolsandcolleges教科书;课本;教材◆aschool/medical/history, etc. textbook学校、医学、历史等教科书
text·bookBrE/ˈtekstbʊk/NAmE/ˈtekstbʊk/adjective[only before noun]usedtodescribesththatisdoneexactlyasitshouldbedone, inthebestpossibleway规范的;标准的◆atextbookexampleofhowthegameshouldbeplayed这项比赛的标准示范