形容词
1. This car is economical to run because it doesn't use much fuel.
开这辆车省钱，因为它耗油不多。
2. It's not an economical method of heating.
这不是一种经济的取暖方式。
3. Going by train is more economical than going by plane.
坐火车比坐飞机更节约。
4. economical的反义词
4. She is an economical housewife.
她是个节俭的家庭主妇。