重点设计基地北部退化区的开发。
Focus development in degraded area at northern part of site.
草甸草原、典型草原样地各土层对照区土壤密度均低于重度退化区。
The soil density of control area of every soil layers of four sample plots in the meadow steppe and typical steppe is lower than the severe degeneration area;
黑人贫困区女人健康状况以不可思议的速度退化，这一状况同样直接对母亲们产生影响。
The shockingly rapid deterioration in health experienced by women in poor black neighbourhoods also directly affects mothers.
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