The lagoon is connected to the sea via a system of canals.

The power supply of the house is via a photovoltaic system.

The school operates via a system of tutor groups.

Roll control was via a system that pivoted the entire lower wing surfaces.

The tax due is calculated via a system of market bands.

In European democracies, governments are elected via a democratic, electoral system.

I think that it lies in the joint presence of the small countries via a European system.

Broadcasting via a system of street loudspeakers the radio is on the air for three hours each Sunday.

It was rotated by four men via a system of gears; 2.25 minutes were required for a full 360 rotation.

All 150 representatives are elected directly via a system of proportional representation.