爵士乐是一种纯的美国黑人音乐，因为在这个时期美国独占了这项艺术。

Jazz is a kind of pure American black music because in this period the United States monopolizes this art.

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随后，新奥尔良的黑人音乐家逐步形成了一种新的表现方式-爵士舞。

Then, new Orleans's black musicians gradually created one kind of new performance way - jazz.

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爵士乐是美国黑人特有的一种音乐类别，而且许多著名的爵士乐音乐家，如约翰·克特兰、查尔斯·明格斯都是黑人民权运动的积极参与者。

Jazz is a uniquely black American genre, and many of its most famous artists, such as John Coltrane and Charles Mingus, were heavily involved in the civil rights movement.

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南方的黑人音乐家开始吟唱他们的艰难的岁月，使他们感到居丧。这便开始了一种伤感的民歌。

The blue stated when he black musicians in the South began to sing about their hard times , which made them feel blue.

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南方的黑人音乐家开始吟唱他们的艰难的岁月，使他们使他们感到居丧。这便开始了一种伤感的民歌。

The blues stated when the black musicians in the South began to sing about their hard times, which made feel blue.

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南方的黑人音乐家开始吟唱他们的艰难的岁月，使他们使他们感到居丧。这便开始了一种伤感的民歌。

The blues stated when the black musicians in the South began to sing about their hard times, which made feel blue.

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