一个约100家市政公用单位组成的行业协会，六月下旬取消了在西埃菲尔山脉的rursee湖的一个类似项目。
Trianel, an association of about 100 municipal utilities, withdrew from a similar project at Rursee Lake in the western Eifel Mountains in late June.
一个约100家市政公用单位组成的行业协会，六月下旬取消了在西埃菲尔山脉的rursee湖的一个类似项目。
Trianel, an association of about 100 municipal utilities, withdrew from a similar project at Rursee Lake in the western Eifel Mountains in late June.
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