She is economising on her expenses to save money for her vacation.

The economisation of resources is essential for sustainable development.

I need to economise on my expenses.

The economisations made by the company led to significant cost savings.

She economised by cutting back on unnecessary expenses.

She economises by shopping at thrift stores.

The economiser is used to improve the efficiency of the boiler.

The economisers in the factory help to reduce energy consumption.