challenger

n.

挑战者；夺标者；

复数：challengers

1. The champion and the challenger meet next week.
   下星期冠军将迎战挑战者。
2. The champion, within striking distance, gave the challenger a severe blow.
   拳王站在打击得到的距离内，给挑战者一记重击。

The Challenger Launch Decision
CHALLENGER: FINE‐TUNING THE ODDS UNTIL SOMETHING BREAKS
Challenger : a multi-agent system for distributed resource allocation
Challenger : a multi-agent system for distributed resource allocation
The Challenger Launch Decision: Risky Technology, Culture, and Deviance at NASA
The Challenger Launch Decision: Risky Technology, Culture, and Deviance at NASA
The Challenger Launch Decision: Risky Technology, Culture, and Deviance at NASA [book review]
The Challenger Launch Decision: Risky Technology, Culture, and Deviance at NASA [book review]
Accountability in the Public Sector: Lessons from the Challenger Tragedy
Affect and accuracy in recall: Phantom flashbulbs: False recollections of hearing the news about Challenger