词根词缀：hydro-, hydra-, hydr-, hyd-

【来源及含义】Greek: water

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

【同源单词】ahydrotaxis, anhydrase, anhydration, anhydride, anhydrobiosis, anhydrous

词根词缀：naus-, nau-, naut-, -naut, -nautical, -nautics

【来源及含义】Greek: ship; sailor; navigation

【同源单词】ad nauseam, aeronausiphobia, aeronaut, aeronautics, aeronautism, aquanaut