At present, throughout the world, over 80% of the land that is suitable for raising crops is in use.

目前，在世界范围内，80%以上适合种植农作物的土地都在使用中。

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Improvements in road construction and sailing had occurred, but shipping heavy freight over land remained expensive, even with the use of rivers and canals wherever possible.

道路设施以及航海技术都有所改进，但是即使在可以利用河流和运河的地方，船运重型货物到陆地的费用仍然很高。

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Over the last five decades, improved farming techniques and technologies have helped to significantly increase crop yields along with a 12% expansion of farmed land use.

在过去50年里，改良的农业科技技术显著提高了农作物的产量，耕种面积扩大了12%。

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In 2006-10 across China they sold land-use rights to over 22, 000km2 of land, an area the size of New Jersey.

ECONOMIST: One year on, China��s most-hyped tax is still mostly hype

The Indonesian government owns almost three-quarters of the country's land, and therefore has sole authority over its disposal and use.

ECONOMIST: The smoke in Asia��s eyes