1. 名詞
   前兆, 先驅
   前導, 先導
   前體, 前身
   前輩, 先進者
   a precursor to/of ...(人事物):
   ...的前兆
   ...的先驅
   ...的前導
   ...的先導
   ...的前體
   

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   同義字詞
   angel,foregoer,forerunner,harbinger,herald,outrider
   ancestor,antecedent,archetype,daddy,foregoer,forerunner,granddaddy,grandaddy,predecessor,prototype
   

例句

1. It was the precursor of modern Lebanon.
2. Precursor cells may be damaged by radiation.
3. They may have held back precursor chemicals.
4. Angina is often another precursor to atherosclerosis.
5. Surprise: The Precursor to Soviet Operational Success.
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