为什么你看上去不开心?
Why did Laura feel unhappy during her first visit to the square?
为什么劳拉在她第一次参观广场时感到不高兴?
See, Heidi, I understand now why you are so unhappy.
看,海蒂,我现在明白你为什么这么不开心了。
Coz the comment that we get so often about this class ? is why would Harvard students possibly be unhappy?
因为我们得到的关于这门课的评价常常是,为什么哈佛的学生会不幸福?
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