為您提供precursor英英釋意。" />

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precursor

英 [pr?'k??s?] 美[pri'k?s?]
  • n. 先驅(qū)，前導(dǎo)

英英釋意

1. a substance from which another substance is formed (especially by a metabolic reaction)
2. a person who goes before or announces the coming of another
3. an indication of the approach of something or someone