vt.开拓，开发（pioneer的过去式与过去分词形式）； 双语释义：n.(名词)[C]拓荒者; 开发者 person who is among the first to go into an area or country to settle or work there[C]探险者 person who goes into previously unknown regions; explorer[C]探索新知识领域的人 person who is the first to study a new are