词根词缀：aqua-, aquatic-, aqui-, aqu-, -aquatically, aque-, -aqueous

【来源及含义】Latin: water, watery solution

【相关词根词缀】 Cross references of word families that refer to "water": hydat-; hydro-; hygro-.

【同源单词】alluvial aquifer, aqua, aqua exclusa, aqua potabile, aqua regia, aqua weed cutter

词根词缀：tard-

【来源及含义】Latin: slow; sluggish

【相关词根词缀】 Cross references directly, or partly, involving "slow, slowness, slow of, sluggish": dys-; lent-.

【同源单词】Ad vindictam tardus, aquitard, mental retardation, psychomotor retardation, psychosocial retardation, retard