词根词缀：eco-, oeco-, oec-

【来源及含义】Greek: house, household affairs [environment, habitat], home, dwelling; used in one extensive sense as, "environment"

【相关词根词缀】Related "home; house" word units: domo-; ecdemo-; nosto-.

【同源单词】agroecologist, agroecology, autecological, autecology, bioecological, bioecologist

词根词缀：sphero-, spher-, -sphere-

【来源及含义】Greek: ball, round, around; globe, global; body of globular form; by extension, circular zone, circular area

【相关词根词缀】 Related ball, sphere-word units: glob-, glom-; hemoglobin-.

【同源单词】adminisphere, aerosphere, allobiosphere, anthroposphere, asphere, aspheric