耶鲁大学的发言人则认为杜马斯这样的行为属于非法进入，建议其他像杜马斯一样的人在线学习耶鲁的免费课程。
Yale's spokesperson said that someone like Dumas would be trespassing, and noted that he could instead take some of the free courses Yale offers online.
基于学习者与在线课程内容的交互模式和行为对收集到的数据进行了分析；
The data were then analyzed to reveal the pattern and behaviour of learners' interaction with the online content of the courses.
这种观望行为影响了实际的教学交互水平，更影响了学习者的在线学习效果。
The lurkers' behavior has influenced the factual interactive level of teaching and learning, and even more it has affected the achievement of on-line learning.
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