非土地财富也与两种技术的更多采用有关，但是未耕地的可用性降低了采用提高生产率的技术的动力。

Nonland wealth was also associated with more adoption of both technologies, but the availability of uncultivated land reduced the incentive to employ the productivity-enhancing technologies.

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清单3中演示了这两种技术。

Both of these techniques are demonstrated in Listing 3.

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这两种技术可以相互补充。

The two technologies are complementary.

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