economical

a.节省的；经济学的

ECG, echelon, echo, echo-location, echo-sounder, echo-sounding, Eckhard Hess, eclair, eclat, eclectic, eclectically, eclecticism, eclipse, eco-, ecological, ecologically, ecologist, ecology, Econ, economic, economically, economics, economist, economize, economize, economise, economy, ecosystem, ecstasy, ecstatic, ecstatically, ECT, ectoplasm, ECU, ecumenical, ecumenical (also oecumenical), ecumenicalism, ecumenically, eczema, ed, Edam,