登月计划旨在建立和测试月球上通信网络的第一部分。

Mission to the moon intends to establish and test the first elements of a communications network on the moon.

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教授提到了两个仆人之间的对话，以解释剧作家如何建立起一部好剧本中必不可少的场景。

The professor mentions a conversation between two servants in order to explain how playwrights develop the obligatory scene of a well-made play.

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虽然华盛顿和杰斐逊私下里表达了对奴隶制的厌恶，但他们也明白，奴隶制是他们帮助建立的这个国家的政治和经济基础的一部分。

While Washington and Jefferson privately expressed distaste for slavery, they also understood that it was part of the political and economic bedrock of the country they helped to create.

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