bis-英式朗读美式朗读基本解释[医] 二, 两个, 两次, 双英文释义pref. A form of Bi-, sometimes used before s, c, or a vowel.上一个单词：bis(triphenylphosphine)dicarbonyl nickel下一个单词：bis-(4-dimethylaminodithiobenzil)-nickel