Precursor
01
先驱, 前兆
someone or something that comes before another of the same type, acting as a sign of what will come next
语法信息
有生性状态
抽象
形态构成
复合词
可数
singular
not gender specific
复数形式
precursors
例子
The invention of the telegraph was a precursor to modern communication technologies.
电报的发明是现代通信技术的先驱。
02
前体, 前驱物
a substance from which another substance is formed (especially by a metabolic reaction)
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词汇树
precursory
precursor
cursor
