ecological

a.生态的

eccentric, eccentrically, eccentricity, ecclesiastic, ecclesiastical, ecclesiastically, ECG, echelon, echo, echo-location, echo-sounder, echo-sounding, Eckhard Hess, eclair, eclat, eclectic, eclectically, eclecticism, eclipse, eco-, ecologically, ecologist, ecology, Econ, economic, economical, economically, economics, economist, economize, economize, economise, economy, ecosystem, ecstasy, ecstatic, ecstatically, ECT, ectoplasm, ECU, ecumenical,