... change course 改变航向 a selected course 选修课 a dinner of five courses 有五菜的正餐 ...
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a selected course
选修课
以上为机器翻译结果，长、整句建议使用 人工翻译 。
So Concise Idiomatic Usage of Basic English Vocabulary should be offered as a selected course for students of the English departments of teachers colleges and universities.
因此，笔者建议在师范院校开设“简明基础英语词汇惯用法”选修课。
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