When one comes to more tractable land at lower altitudes, problems of permanent pasture improvement are not nearly so difficult.

在海拔较低的易于耕作的土地上，改进永久草场的问题并不很困难。

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Land was used for permanent pasture, therefore farming was extensive. This zone extends to the margins of cultivation, beyond which was wasteland.

土地用作放牧之用，耕作为粗放式，这地带伸延至耕种边界，以外的是荒地。

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In Wales, where most of our studies have been done, energy crops would most likely replace sheep grazed leys which are classed as "permanent" pasture.

在威尔士，我们的大多数研究已经完成，很有可能将以能源农作物取代被归类于“永久的”牧场的绵羊喜食的牧草。

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In Wales, where most of our studies have been done, energy crops would most likely replace sheep grazed leys which are classed as "permanent" pasture.

在威尔士，我们的大多数研究已经完成，很有可能将以能源农作物取代被归类于“永久的”牧场的绵羊喜食的牧草。

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