B2 noun /ˌpʌɪ.əˈnɪr/
Pioneer
在新地区探索或定居的第一个人;开发新思想或方法的人
Meaning
a person who is among the first to explore or settle a new area; someone who develops new ideas or methods
Example
She was a pioneer in the field of computer science.
她是计算机科学领域的先驱。