词根：-naut-, -nav-

【词根含义】：船

【词根来源】：-naut-(船)来源于希腊语naus(船);-nav-(船)来源于拉丁语中navis(船)及其派生词navia(舰队)和navalis(船的)。

【同源单词】：aeronaut, aeronautics, aquanaut, astronaut, astronautic

词根：-act-, -ag-, -ig-

【词根含义】：做,行动; 驾驶,引导

【词根来源】：来源于拉丁语动词ago, agere, egi, actus(行动)。

【同源单词】：act, acting, action, activate, active

前缀：circum-

【词根含义】：周围

【词根来源】：来源于拉丁语名词circus(圆), 介词circum(大约)

【同源单词】：circuit, circuitous, circumambulate, circumcision, circumference

词根词缀：-ation, -ization, -isation

【来源及含义】Greek > Latin: a suffix; action, act, process, state, or condition; or result of doing something

【相关描述】Although there are over 1,450 word entries ending with -ation or -ization listed in this unit, there are certainly many more which exist in the English language. At any rate, this unit provides a significant number of -ation and -ization examples for you to see.

【同源单词】abarticulation, abbreviation, abdication, abdominal examination, aberration, abevacuation

词根词缀：circum-

【来源及含义】Latin: around, about, surrounding, closed curve, circling, circular on all sides; literally, "in a circle"

【相关词根词缀】 Related "around, round, surrounding" units: ambi-; ampho-; circ-; cyclo-, -cycle; gyro-; peri-.

【同源单词】Antarctic Circumpolar Current, circuit, circuitous, circuitously, circuitousness, circuitry

词根词缀：nav-

【来源及含义】Latin: ship, ships; sailor

【同源单词】bionavigate, bionavigation, circumnavigable, circumnavigate, circumnavigation, circumnavigator