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54. 改善难民营的废水管理。
54. improve wastewater management in the refugee camps.
Last Update: 2016-12-04
Usage Frequency: 1
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(d) 改善难民营的环境卫生条件；
(d) to improve environmental health conditions in refugee camps;
Last Update: 2016-12-04
Usage Frequency: 4
Quality:
