1. The scientists of the country pioneer in cleaning up harbour water. 这个国家的科学工作者开创净化港口水域的工作。
2. This is the way )a true pioneer develops! 这是方式）一个真实的先锋发展！
3. But no one ever said being a pioneer was easy. 但没有人曾说成为先锋者是一件容易的事。
英英解释
n.
1. someone who helps to open up a new line of research or technology or art
2. one the first colonists or settler in a new territory v.
1. open up an area or prepare a way
2. take the lead or initiative in; participate in the development of
3. open up and explore a new area
