precursors
pri:'kɜ:səz
基本解释
n. 先驱( precursor的复数形式 ); 先行者; 先兆; 初期形式
英文释义
n. a substance from which another substance is formed (especially by a metabolic reaction)
n. a person who goes before or announces the coming of another
n. something that precedes and indicates the approach of something or someone
词形变化
上一个单词：precursor nuclide
下一个单词：precursory