a person or thing that comes before another of the same kind; a forerunner
前身;先锋,先驱
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a three-stringed precursor of the violin 小提琴的三弦前身
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[as modifier]
precursor cells .前身细胞。
a substance from which another is formed, especially by metabolic reaction
(尤指经新陈代谢形成另一种物质的)前体,前质
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pepsinogen is the inactive precursor of pepsin .胃蛋白酶原是胃蛋白酶的无活性前体。
"late Middle English: from Latin