1. economy –n.[c] 1）经济，经济体系
2）节约；节省(钱；时间，精力等)
economics – 经济学（用单数）；经济意义（情况；因素）（多用单数）
economic –adj.经济的，经济学的（无比较级）
economical – adj.节俭的；经打细算的using money, time, goods without waste
A small car is more ___ than a large one, because it uses less gasoline. (economical; economic)
The country is in a bad ___ state.(economic; economical)
