The action was organized by the Swiss association for International Cooperation Helvetas to highlight the UN's World Water Day. (AP Photo/Keystone/Peter Klaunzer)
这次行动由瑞士协会的国际合作者Helvetas组织，来引起人们对世界水日的关注。
The action was organized by the Swiss association for International Cooperation Helvetas to highlight the UN's World Water Day. (AP Photo/Keystone/Peter Klaunzer)
这次行动由瑞士协会的国际合作者Helvetas组织，来引起人们对世界水日的关注。
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