Iron hoes, which made the land more productive, and iron weapons, which made the warrior more powerful, had symbolic meaning in a number of West Africa societies.
铁制锄头使土地更高产，铁制武器使战士更强大，它们在许多非洲西部的部落中都拥有象征性意义。
They can be located on land that is not otherwise of special use, and they will use a minimum even of that land, making the productive land around them highly accessible.
它们能够建造在没有特别用途的土地上，它们将最低限度地使用那片土地，使得周边多产的土地非常容易利用。
On worlds around M stars, land plants that exploited a wider range of colors would be nearly as productive as plants on Earth.
在M型恒星系中的行星，能够利用各种光的陆生植物，生产力应该跟地球植物相去无几。
A popular story arose: Our ancestors created and main-tained "The Land of Peach Blossoms, " a lost paradise, a productive and harmonious basin discovered by a ?sherman.
于是流传开了这样一个故事：我们的祖先创造并护育着一块“桃花满园之地”，一个渔夫发现了这片丰饶、和谐的世外桃源。
The productive value in the waterlogged land has increased as a result of the most suitable varieties, the techniques and the new high effective agricultural model.
筛选出最适合的新品种、新技术和高效农业模式在涝渍地上示范推广，提高了涝渍地的效益。
However, in combination with a global growing demand for food, this could lead to a food-fuel competition for bio-productive land.
然而，伴随着全球对粮食需求的增长，这将导致能源作物与粮食对土地的竞争。
However, in combination with a global growing demand for food, this could lead to a food-fuel competition for bio-productive land.
然而，伴随着全球对粮食需求的增长，这将导致能源作物与粮食对土地的竞争。
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