1. 名詞
   precursor複數: 前兆, 先驅
   前導, 先導
   前體, 前身
   前輩, 先進者
   precursors 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. Typical precursors are metal alkoxides.
2. And many of the precursors are really nasty.
3. But having the precursors present is not enough.
4. Darwin's precursors and influences by John Wilkins.
5. His views can be seen as precursors to Baruch Spinoza.
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