oszczędny wydajny 用英语:

A small car is more economical than a large one.

Small cars are very economical because of their low fuel consumption.

Expensive things often prove more economical in the long run.

They closed down the ferry service since it was no longer economical.

This car is very economical on gas.

A housewife should be economical.

She is economical of her time.

Mrs. Suzuki is a very economical housekeeper.

Nancy is economical with her smiles.

It's more economical to go by bus instead of taking a taxi.

His economical backing is secure.

This problem bristles with difficulties both psychological and economical.

Besides being economical, it's fun.

Some people say that traveling by plane is rather economical.