再假设，种群迁往一个地方——如尼罗河上游，那里的人的特点是身材高大。
Suppose this population migrates to a region, like the Upper Nile, where it is an advantage to be very tall.
它已经建成了几个货运港，许许多多的船舶游艇停靠，计划向尼罗河上游在苏丹境内的部分延伸。
It has built cargo ports, commissioned lots of new barges and plans to expand upriver, in Sudan.
它的尼罗河上游邻居——苏丹有4400万人口，埃塞俄比亚有8300万人口——人口增长得更快，这将加大生产粮食所需的用水量。
Its upstream Nile neighbors - Sudan, with 44 million people, and Ethiopia, with 83 million - are growing even faster, increasing the need for water to produce food.
埃塞俄比亚以及其他尼罗河上游国家，包括布隆迪，刚果，肯尼亚，卢旺达，坦桑尼亚和乌干达诸国，联手改写1959年对埃及有利的条约。
Ethiopia and the other upstream countries-Burundi, Congo, Kenya, Rwanda, Tanzania and Uganda-have banded together to rewrite a 1959 treaty that favours Egypt.
如果战争爆发，那么这场战争将可能在南北苏丹交界处的原油争端地区进行，也就是下图所示的几个地区：科尔多凡南部地区、阿拜伊、尤里提与尼罗河上游各省。
If war broke out, it would probably be fought in the disputed oil fields in the borderlands between north and south: in southern Kordofan, Abyei, Unity and the Upper Nile states (see map).
如果战争爆发，那么这场战争将可能在南北苏丹交界处的原油争端地区进行，也就是下图所示的几个地区：科尔多凡南部地区、阿拜伊、尤里提与尼罗河上游各省。
If war broke out, it would probably be fought in the disputed oil fields in the borderlands between north and south: in southern Kordofan, Abyei, Unity and the Upper Nile states (see map).
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