来自pioneer,先驱，先锋。

1. The school has won awards for its pioneering work with the community.

这所学校因其针对该社区具有开创性的工作而获奖。

2. Harefield Hospital has become world-famous for its pioneering heart transplant surgery.

哈瑞福德医院以其开创性的心脏移植手术闻名于世。

3. pioneering work on infant mortality

婴儿死亡率方面的探索性研究工作

4. Every time we talk about the hard pioneering days, we have so much to say that we can't get it all out.

大家一提起那艰苦创业的日子, 总有说不完的话.

5. America has always retained her pioneering spirit.

美国一直保持着其创新精神。