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These various courses all seemed insuperably difficult to the student.
这些课程对于学生来说好像太难了.
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"these various courses all seemed insuperably difficult to the student"
国先网英语在线翻译词典收录了4367410条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。