請問一下這句子意思

sungtat

小弟我做了閱讀題目
課本 Master the GMAT

裡面有幾個句子看不太懂
麻煩大大幫我翻譯一下

At least two possible hypotheses may explain why the adjustment for productivity more than accounts for the observed income differential for women, whereas the income differential persists for men.

上面那裏我只了解說....最少有兩個可能的假設能解釋為什麼生產力的調整 多於........後面就不太懂了

AND

Second, the data are consistent with the hypothesis that the intensity of discrimination against women differs little between white and black people. Therefore, racial discrimination adds little to the effects of existing sex discrimination.

這句話 我卡在 differs little between 還有 adds little to
搞不懂他是說 種族歧視 多於 性別歧視 ...還是說 性別歧視 多於 種族歧視

麻煩大大們幫我解答
真的感激不盡

Icanw

第一局不是很懂。

第二局的意思是说对妇女歧视的强度在黑人和白人中没有什么区别，因此，种族歧视不能用来解释对现今的性别歧视的影响 。
作者主要是要排除种族歧视这种解释。