leader ·noun (WINNER)
Definition: someone or something that is winning during a race or other situation where people are competing Level: C1
进站后，他重新加入比赛，但已落后领跑者两圈。
After the pit stop, he rejoined the race two laps behind the ___leader.
该公司已在可再生能源技术领域确立了世界领先地位。
The company has established itself as a world ___leader in renewable energy technology.
在整个马拉松比赛中，她都保持着领先者的位置。
Throughout the marathon, she maintained her position as the ___leader.