An extensive system of ponds and dams is also under construction.

South Korea's extensive system of nuclear power plants are an obvious target.

An extensive system is now being developed and under construction.

The proposal is based on an extensive system developed over the last five years in Britain.

However, Sweden also has an extensive system of administrative law.

All three described an extensive system of corruption, in which money was collected from anyone doing business with the city.

Over the years an extensive system of canals has been built.

Your species has developed an extensive system of engineering using alternating current.

Judge's Cave is an extensive system based on various levels.

The once extensive system of tracks has been reduced in recent years.