后缀:-fold [形容词及副词后缀]
表示...倍、...重
twofold 两倍,两重
threefole 三倍,三重
fourfold 四倍,四重
sevenfold 七倍,七重
tenfold 十倍,十重
hundredfold 百倍,百重
thousandfold 千倍,千重
manyfold 许多倍地
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