For example, cardinality restrictions specify the number of relationships that a class of individuals can participate in.
例如,基数限制指定某类个体可以参与的关系的数量。
Futuroscope is not_only for individuals, but is also the perfect mix of fun and learning for class outings.
观测未来主题公园不仅仅适合个人,也适合学生全班出游,因为它是娱乐与学习的完美结合。
A primary school teacher found an interesting phenomenon: those individuals also provide much material for thought of poor health of the students in the class, the family often have poor health.
有位小学教师发现一个有趣又发人深思的现象:班级里那些个人卫生差的学生,其家庭卫生往往也较差。
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