求翻译：在传统教学中，教师在很大程度上依赖教科书，较少结合实际充实一些和时事挂钩的教学内容，必要的英美文化背景知识等，使教学失去弹性，因而它就失去了很多功能性和时效性。是什么意思？

In the traditional teaching, teachers rely heavily on textbooks, less combined with the actual enrich linked to course content and current affairs, if necessary, the Anglo-American cultural background knowledge, teaching loses its elasticity, and thus it lost a lot of functionality and effectiveness

In the traditional teaching, teachers rely heavily on textbooks, and less a reality and some of the hook magazine teaching content and, if necessary, British and American cultural background knowledge, and so on, to make teaching loss of elasticity, thus it has lost many of the features, and timelin

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In traditional teaching, teachers rely heavily on textbooks, less light to enrich some of the teaching content and linked to the current events, the necessary background knowledge of British and American culture, teaching lost elasticity, thus it will lose a lot of functionality and effectiveness.

In the traditional teaching, the teacher relies on the textbook to a great extent, the few unions actual enriches the course content which some and the current event links up, the essential Britain and America cultural context knowledge and so on, causes the teaching to lose the elasticity, thus it