1. 经济的 , 节约的 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。 be economical of time and energy 节省时间和精力 It's not an economical method of heating. 这不是一种经济的取暖方式。

2. 节俭的 She is an economical housewife. 她是个节俭的家庭主妇。

3. 经济学的 ; 经济上的