challenger
['tʃælindʒə]
n.挑战者, 需要全力对付的事物
例句与用法：
The challenger has been training hard for the big fight.
这位健将为参加拳击大赛夺魁而进行坚苦的锻炼。
The challenger was so outclassed that he couldn't get a single blow in.
挑战者的技术太差了，连一拳也没有击中对方。
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 champion and the challenger meet next week.
下星期冠军将迎战挑战者。
词形变化：
形容词: challengeable | 动词过去式: challenged | 动词过去分词: challenged | 动词现在分词: challenging | 动词第三人称单数: challenges |
详细释义：
n.
挑战人; 挑战物