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:cav-, cavo-, cava-, cavi-, cavern-
【来源及含义】Latin: hollow, a hollow place; chasm; prison
【相关词根词缀】 Related "cave, cavern" word sources: speleo-; spelunc-, spelunk-; stalac-, stalag-; troglo--.
【同源单词】angiocavernoma, biconcave, bulbospongiosus, cage, cajole, cajolement