Students are normally expected to prepare work in advance for seminars and tutorials and this can take the form of researching a topic for discussion, by writing essays or by solving problems.
学生通常需要提前为研讨会和辅导课准备工作，这可以采取研究讨论主题、写论文或解决问题的形式。
They introduced a topic for discussion.
他们提出议题供讨论。
Mobile-phone coverage is one obvious topic for discussion.
手机信号覆盖是谈话中的一个显著话题。
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