前缀：amphi- 两、双

amphicar 水陆两用车

amphibiology 两栖生物学

amphitheatre 两边都可观看的剧场，圆形剧场

amphibian 水陆两栖的

词根词缀：theco-, thec-, the-, theca-, theci-, -thecial, -thecae, -thecas, -thecium, -theca, -thec, -thecal, -thecial, -thecae, -thecas, -thecs, -tecs

【来源及含义】Greek > Latin: case, capsule, sheath, container, receptacle [also: a placing, a setting, a putting]; "a place where" something is kept

【同源单词】amphithecium, apothecary, apothecium, athetize, athetoid, athetosis