她作为领导的坚韧赢得了团队的尊重。

Her ___toughness as a leader earned her respect from the team.

训练计划的严苛性吓退了许多申请者。

The ___toughness of the training program deterred many applicants.

让年轻人接触现实世界挑战的严酷性对他们的成长至关重要。

Exposing young people to the ___toughness of real-world challenges is essential for their growth.