求翻译：美国黑人文学尽管一直受到歧视，迄今还被排除在美国主流文学之外，但黑人诗歌和黑人戏剧今天已成为美国文学中最有生命力、最富于朝气的因素，则是公认的事实。１９８３年黑人女作家艾丽斯·沃克的长篇小说《紫色》囊括了当年普利策奖、全国图书奖和全国书评界奖三大奖，更证明黑人作家中人才辈出，优秀的黑人文学必将在美国文学中起越来越重要的作用。是什么意思？

Although African-American literature has been discriminated against, excluded from the United States so far has also been outside the mainstream literature, but the drama of black poetry and black literature in the United States today has become the most vital, most rich in energetic factors, it is

Despite the American black literature has been discriminated against, as yet, they were excluded from the mainstream of American literature, but black poetry and black drama today has become the most vibrant in American literature, the most richly vibrant factor is recognized and accepted fact. 1983

Although the black American literature receives the discrimin

United States black literature has been subject to discrimination, so far excluded from the United States outside of mainstream literature, but African American poetry and Black Theatre today has become the United States literature in the most dynamic, most rich vitality of the factors, it is accept