词根词缀：auri-, auriculo-, auricul-, auro-, aur-

【来源及含义】Latin: ear

【相关描述】Don't confuse this word family with another auri- unit which means "gold".

【相关词根词缀】 Related "ear" word families: myring-; oto-; tympano- (drum, stretched membrane).

【同源单词】aural, auricle, auricula, auricular, auriculare, auricularly

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