Chapter 4 gives a brief introduction of the historic contribution of Wagner and Verdi to Opera.

第三章，简要概述瓦格纳与威尔第歌剧创作的历史贡献。

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With the yield well below the historic average it seems implausible to assume any further contribution from valuation.

在获利率远低于历史平均水平的情况下，似乎很难期待从估值方面获利。

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Because of its contribution to the 19~ th -Century American Renaissance, Emerson's theory of creation has been considered to be of historic significance.

它为19世纪美国文艺复兴做出了重大贡献，有着深刻的历史意义。

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"If I can make a tiny, tiny contribution in that direction, given how historic the system is, I'd be very happy and I think my graduate students would be as well, " Bringsjord said.

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