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
例子
His early works were seen as a precursor to his later, more mature art.
他的早期作品被视为他后来更成熟艺术的先驱。
02
前体, 前驱物
a substance from which another substance is formed (especially by a metabolic reaction)
词汇树
precursory
precursor
cursor
