The power supply in this area is unstable.

His emotional state is very unstable.

This bridge is unstable, so it's dangerous to cross.

In my area, a summer festival is held every year.

The power supply in this area is stable.

We supply fresh vegetables to the market.

We measure power using a wattmeter.

She is emotionally unstable, getting angry or crying easily.

We need to find a new source of supply.

We are looking for a new supplier.