/,paɪə'nɪə(r); ,paɪə`nɪr/
n
1 (a) person who is among the first to go into an area or country to settle or work there 拓荒者; 开发者
*land cleared by the pioneers 拓荒者开垦的土地
* [attrib 作定语] pioneer wagons 拓荒者的四轮大车.
(b) person who goes into previously unknown regions; explorer 探险者
*pioneers in space 探索宇宙空间的人.
2 person who is the first to study a new area of knowledge 探索新知识领域的人
*They were pioneers in the field of microsurgery. 他们是显微外科学领域的创始人.
* [attrib 作定语] pioneer work 探索新知识领域的工作.
3 any one of a group of soldiers who go into an area in advance of an army to clear paths, make roads, etc 工兵.

v
1 [I] act as a pioneer(1a) 当拓荒者; 当开发者.
2 [Tn] open up (a way, etc) 开辟（道路等）
*pioneer a new route to the coast 开辟通往海岸的新路线.
3 [Tn] be the first person to develop (new methods); help the early development of (sth) 倡导（新方法）; 促进（某事物）的初期发展
*She pioneered the use of the drug. 是她最先使用的这种药品.