If you describe a person or thing as the forerunner of someone or something similar, you mean they existed before them and either influenced their development or were a sign of what was going to happen.
例句
...a machine which, in some respects, was the forerunner of the modern helicopter...在某些方面成为现代直升机前身的机器Some respiratory symptoms can be the forerunners of asthma.一些呼吸道症状可能是哮喘病的先兆。
英汉词典释义
n.
先驱, 开路人
She is a forerunner of the modern women's movement.她是现代妇女运动的先驱。
先兆, 前兆
Heavy clouds are the forerunners of a storm.阴云密布是暴风雨的前兆。
英英词典释义
Noun
1. anything that precedes something similar in time;
"phrenology was an antecedent of modern neuroscience"
2. a person who goes before or announces the coming of another
3. an indication of the approach of something or someone