词根词缀：intro-

【来源及含义】Latin: within, inside, into, in, inward

【相关描述】Borrowed from Latin intro-, from pre-Latin interos, from inter-,"between".

【同源单词】introduce, introduced, introducer, introduction, introductive, introductory

词根词缀：spec-, spic-, spect-, spectat-, spectro- -spectr, -spectful, -spection, -spective

【来源及含义】Latin: to see, seeing; to look at, looking at; sight, to appear, appearing; to behold, to examine, examining

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "appear, visible, visual, manifest, show, see, reveal, look": blep-; delo-; demonstra-; opt-; -orama; pare-; phanero-; phant-; pheno-; scopo-; vela-, veal-; video-, visuo-.

【同源单词】Ab alio expectes, alcohol fetopathy, allopatric speciation, aspect, audiospectography, auspex

词根词缀：-tion

【来源及含义】Latin: a suffix forming nouns from verbs of condition and action; an act or process: resumption, absorption; state or condition, redemption, exhaustion; something resulting from or otherwise related to an act or process, assumption, friction

【相关描述】This unit is presenting a small fraction of the hundreds of words ending with the suffix of -tion; however, there is a significant number of words which may help everyone have a better understanding and appreciation of the use of this element.

【同源单词】abduction, abjection, ablution, ablution, abolition, abruption