savanna是什么意思,savanna怎么读,
1.There is generally little doubt that fire is a significant factor in maintaining savanna, certainly in most regions.
火灾是维持稀树草原的一个重要因素,在大多数地区都是如此,(人们)对此通常很少有疑问。
2.We are, after all, only creatures of the African savanna, programmed to uncover trends in the natural world.
我们终归只是来自非洲草原的生物,有计划的掩盖着自然界的发展趋势。
3.In these areas, rainfall per month exceeds that in the above definition, so other factors must contribute to savanna formation.
在这些地区,每个月的降雨量超过了上述定义中的量,所以一定有其他因素促成草原的形成。
4.In many characteristics, savanna soils are similar to those of some rain forests, though more extreme.
稀树草原的土壤与一些热带雨林的土壤有许多相似的特征,尽管会更极端。
5.The herders shifted south, following the major river systems into savanna regions.
牧民们向南迁移,沿着主要河流系统进入热带草原地区。
6.In "Secrets of the Savanna" they issued a strong call for human population control in Africa.
在《稀树大草原的秘密》一书中,他们发出了非洲应当控制人口的强烈呼唤。