toughness

名词 toughness:

1. enduring strength and energy
   同义词：stamina, staying power
2. the property of being big and strong
   同义词：huskiness, ruggedness
3. the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
   同义词：temper
4. impressive difficulty
   同义词：formidability

1. She has an unusual degree of self-reliance and mental toughness.
   她有非凡的自立的精神和坚韧不拔的精神。
2. All this toughness does not sit well with everyone.
   所有这种强硬的做法并非人人都能接受。