Moreover, a local expert told the newspaper that unharvested reeds may result in pollution by clogging-up the river.

另外，一位当地这方面的专家告诉晚报记者说，大量野生的芦苇会堵塞河道造成水源污染。

youdao

The debris and unexploded munitions clogging the river are causing severe economic disruption.

BBC: Minister takes the Danube plunge