pioneer

1. N-COUNT Someone who is referred to as a pioneer in a particular area of activity is one of the first people to be involved in it and develop it. 先驱

...one of the leading pioneers of photojournalism. …摄影新闻界的主要先驱之一。

2. V-T Someone who pioneers a new activity, invention, or process is one of the first people to do it. 倡导

...Professor Alec Jeffreys, who invented and pioneered DNA tests. …发明和倡导DNA测试的亚历克·杰弗里斯教授。

3. N-COUNT Pioneers are people who leave their own country or the place where they were living, and go and live in a place that has not been lived in before. 拓荒者

...abandoned settlements of early European pioneers. …已废弃的早期欧洲拓荒者的居住地。