something or someone that acts as an early and less advanced model for what will appear in the future, or a warning or sign of what is to follow先驱,先行者;预兆,前兆
Germany's Green party was said to be the forerunner of environmental parties throughout Europe.德国绿党据说是全欧洲环保政党的先驱。
The drop in share prices in March was a forerunner of the financial crash that followed in June.3月份股价的下跌是随后6月份金融崩溃的一个预兆。