马拉松赛是专门为测试运动员的耐力而设计的比赛。

Marathons are races specifically designed to test athletes' ___endurance.

要在超耐力项目中脱颖而出，运动员必须拥有非凡的耐力。

To excel in ultra-endurance events, athletes must possess remarkable ___endurance.

他在艰苦的登山探险中表现出的坚定不移的耐力赢得了众人的钦佩。

His unwavering ___endurance during the arduous mountain expedition earned him great admiration.