求翻译：近几十年的英语教学,无论英语教材还是英语课堂教学都大量 介绍了英美国家的文化与习俗,高等学校还开设了以英美文化为背 景和核心的必修课和选修课。是什么意思？

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The Teaching of English in recent decades, whether English teaching English or classroom instruction introduced a large number of British and American national culture and customs of the colleges and universities are opened to the British American culture of back view and core and elective course.

Near several dozens year English teaching, regardless of English teaching material or English classroom instruction all massively introduced the British and American country culture and the custom, the college also opened has changed into the background and the core required course and the elective

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