The land was not suitable for farming.
这块土地不适合耕种。
A likely explanation for this involves the fact that intercontinental migrations require both a land bridge connecting the two continents and the suitable habitat both on and across that land bridge.
对此,有一种可能的解释是,洲际迁移既需要连接两个大陆的大陆桥,也需要大陆桥上和桥对面存在合适的栖息地。
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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