When lectures are the principal method of instruction in larger classes, regular periods may be set aside for small group discussions under the leadership of an assistant instructor.
较大的班以讲课为主要教学方法时，也会拨出一定时间由助教领导进行小组讨论。
When lectures are the principal method of instruction in larger classes, regular periods may be set aside for small group discussions under the leadership of an assistant instructor.
人数较多的班以讲课为主要教学方法，但也会定期安排时间由助教负责进行小组讨论。
When lectures are the principal method of instruction in larger classes, regular periods may be set aside for small group discussions under the leadership of an assistant instructor.
人数较多的班以讲课为主要教学方法，但也会定期安排时间由助教负责进行小组讨论。
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