| 单词 | bi- |
| 释义 | bi- bi-1 a combining form meaning "twice," "two," used in the formation of compound words: bifacial; bifarious. Cf. bin-. [ < L, comb. form of bis; see TWICE] Usage. All words except biennial referring to periods of time and prefixed by BI-1 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." To avoid confusion, it is better to use the prefix SEMI- to mean "twice each" (semiannual; semimonthly; semiweekly) or the phrase twice a or twice each (twice a month; twice a week; twice each year), and for the other sense to use the phrase every two (every two months; every two weeks; every two years). bi-2 var. of bio-, esp. before a vowel: biopsy. |
| 随便看 |
|
英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。