二元关系型 态的结构限制包括两个部份:基数比 (Cardinality ratio) 和参与度(Participation constraint) 。 关系的基数比 定义一个个体最多可以跟几个个体发生此类 关系。
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虽然起始基数比私立的低,但是公立法学院的学费涨速更快:对于那些想留在本州上学的人,学费平均值是16000美元左右,几乎涨了三倍。
At public law schools fees grew even faster, albeit from a lower base: for those going to schools in their home state they almost trebled, taking the median to around $16, 000.
不仅如此,这些在经济复苏后生育的女性,受到的教育比之前任何一代的妈妈都好,当然,她们的年龄基数也会略微高一些。
What’s more, the women who give birth to these post-recession babies will be better educated than any previous generation of mothers, and slightly older too.
Now, of course, there are denominator issues here because we started with a much higher base rate than these other countries, but if you think about the size of the populations there, the number of people who are going to become diabetic in the next twenty-five years is really very frightening.
现在,当然这里存在着分母的问题,我国的增长基数比其他国家要大得多,因为一旦考虑到人口总量,在未来25年成为糖尿病人的人数,就非常非常的惊人了
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