n.[C]

1. 先行者，先驅者；先導；前驅
   Penicillin was the forerunner of modern antibiotics.

   青黴素是現代抗生素的先導。

   Dr. Sun Yat-sen was the forerunner of Chinese revolution.

   孫中山先生是中國革命的先行者。

2. 先人，祖先
3. 預兆；徵候
   Warm rains are the forerunners of spring.

   暖雨是春天來臨的前兆。

n.

1. a precursor.
2. archaic an advance messenger.