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precursors pri:'kɜ:səz

释义

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

原型: precursor 原型变体: s

BNC词频排名: 0 | 当代语料库词频排名: 0