当环境条件稳定时，偏离率相对较低，但当河流受到严重干扰时，偏离率会急剧增加。
Straying rates remain relatively low when environmental conditions are stable, but can increase dramatically when streams suffer severe disturbance.
自从河流改道之后，死亡湖盆就没有了稳定的活水注入。
Dead Vlei has not had regular water since the river changed its course.
第二个问题，尼罗河流域国家间关于水资源使用问题的分歧加大，已影响到地区稳定。
Secondly, the increasing disputes among Nile River countries over water resources have affected regional stability.
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