求翻译：漫长的奴隶制度对黑人产生了不可消除的负面影响，其中关键的一个就是剥夺了他们受教育的权利和机会，从而使他们几乎没有借助书面语言表达情感的能力，这样，口头语言变成了他们的主要情感表达途径。是什么意思？

Long slavery of blacks had a negative impact can not be eliminated , including the key one is deprived of their rights and opportunities to education , so that they have almost no means of written language to express emotion , so that they become a spoken language

Long the slavery of Blacks have not eliminated the negative impact, and a key one is that they were denied the right to education and the opportunity to make their little by means of written language express their emotions, so that oral language to become the main expression of feelings.

The long slave system had the negative influence to the black which could not be eliminated, in which key on has deprived them the right and the opportunity which educated, thus caused them nearly not with the aid of written language expression emotion ability, like this, the spoken language turned

Long and irreversible negative impact slavery of blacks, key among which is depriving them of the right to education and opportunities, so that they almost did not have written language ability to express emotion, so that oral language into their main means of emotional expression.

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