而我确实在与哥伦比亚青少年有关的工作中发现，对诱因动机和多巴胺的研究或许可以帮助我理解：为什么一些青少年会深陷吸毒之中不能自拔。
But I did see in my work with Colombian adolescents that research on incentive motivation and dopamine could help me understand how some adolescents got so deeply involved with drug use.
而采用一些外部的诱因措施来帮助学生生成良好的学习动机显得非常必要。
Therefore it seems very essential to adopt some external inducement measures to help students to produce good learning motivation.
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