题目内容：

求讲解句子结构,
For example,they do not compensate for gross social inequality,and thus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circuumstances.

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例如,他们并不能补偿所有的社会不公平性,因此也就不能说清楚,要是一位地位低下的年轻人在更为有利的条件下成长的话,那么他会怎样.从结构上讲,它是两个并列句,第一句：they do not compensate for gross social inequ...