Maple_kk 'of' or 'for'??
Not only is this house a center of non-classroom learning, but it's also a hub for social activity.
宿舍不仅是课堂以外的学习天地，同时也是学生社会活动的中心。
from：《哈佛大学宣传片》
a center of non-classroom learning a center for non-classroom learning
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