We have many factories and they're polluting our rivers because we have a lot rivers in Belgium.
有太多的工厂污染河流,因为比利时有很多河流。
英语百科
Lot (river)
The Lot, pronounced:[lɔt], originally the Olt (Occitan:Òlt; Latin:Oltis), is a river in France, right tributary of the Garonne. It rises in the Cévennes, flowing west through Quercy, where it flows into the Garonne near Aiguillon, a total distance of 481 kilometres (299mi). It gives its name to the Lot département.