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

toughness 是由形容词 tough（坚韧的、强硬的）加上名词后缀 -ness 构成的名词，表示"坚韧、顽强"的品质。后缀 -ness 通常用于将形容词转化为抽象名词，表示某种性质或状态。