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运营和维护了联合国所属净水厂
united nations-owned water purification plants were operated and maintained
Last Update: 2016-12-04
Usage Frequency: 1
Quality:
运营和维护了联合国所属净水厂，使其逐步退出运行并将其送归原处
united nations-owned water purification plants operated, maintained, decommissioned and repatriated
Last Update: 2016-12-04
Usage Frequency: 1
Quality:
联合国所属净水厂
united nations-owned water purification plants
Last Update: 2016-12-04
Usage Frequency: 8
Quality: