词根词缀：bi-, bin-, bino-, bis-

【来源及含义】Latin: two, twice, double, twofold; a number; it normally functions as a prefix

【相关描述】This bi- is used before s, c, or a vowel. Don't confuse this bi- with another one which means "life".

All words except biennial referring to periods of time and prefixed by bi- are potentially ambiguous. Since bi- can be taken to mean either "twice each" or "every two", a word like "biweekly" can be understood as "twice each week" or "every two weeks".

【同源单词】biacid, biangular, biannual, biannual, biarchy, biarticulate

词根词缀：phant-, phanta-, phas-; -phasic, -phant

【来源及含义】Greek: manifest; show, appear, make appear, make visible, display; visible; to show [through], to shine [through]; illustrious

【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-; pheno-; scopo-; spec-; vela-, veal-; video-, visuo-.

【同源单词】anaphase, aphanite, aphantic, aphantobiont, biphasic, biphasic sleep