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

词根词缀：stratio-, strati-, strato-, strat-, -stratus

【来源及含义】Latin: horizontal layer; "stretched, spread out"; layer, cloud layer; to strew

【同源单词】altostratus cloud, consternation, geological column, geological section, prostrate, prostration