1
the toughness of sth
of 后接具体对象，表示某人或某物在身体或性质上的坚韧。
The toughness of the steel makes it suitable for bridges.
这种钢的韧性使其适用于桥梁。
韧性；坚韧；耐久性
先理解核心含义，再看它在真实句子里的用法。
韧性；坚韧；耐久性
the quality of being strong and able to endure difficult conditions
The toughness of the steel makes it suitable for bridges.
这种钢的韧性使其适用于桥梁。
区别于“有粘性”和“强硬”
坚韧的状态。
The state of being tough.
持久的力量和精力
enduring strength and energy
艰巨的困难。
A formidable difficulty.
强大和强壮的特性
the property of being big and strong
Her mental toughness helped her finish the marathon despite the pain.
她的心理韧劲帮助她忍着疼痛跑完了马拉松。
The toughness of the steel makes it ideal for building bridges.
这种钢材的韧性使其非常适合建造桥梁。
He showed great toughness in dealing with the difficult situation.
他在应对困难局面时表现出了很强的坚韧。
of 后接具体对象，表示某人或某物在身体或性质上的坚韧。
The toughness of the steel makes it suitable for bridges.
这种钢的韧性使其适用于桥梁。
in 后接领域或活动，表示在该方面的坚韧或强硬。
His toughness in negotiations earned him respect.
他在谈判中的强硬为他赢得了尊重。
show/display 是常见动词搭配，表示表现出坚韧。
The player showed great toughness despite the injury.
这名球员尽管受伤，仍表现出极强的顽强。
Not this
He is toughness and never gives up.
Use this
He is tough and never gives up.
描述人的性质时，be 动词后要用形容词 tough，而 toughness 是名词，意为“韧性、坚韧”，不能作表语形容词。
Not this
She showed many toughnesses during the training.
Use this
She showed much toughness during the training.
toughness 通常为不可数名词，不能用 many 或复数形式 toughnesses；要说程度，可用 much 或 great 等修饰不可数名词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
心理韧性；意志力
Mental toughness is essential for competitive athletes.
心理韧性对竞技运动员至关重要。
身体耐力；体格强健
The training program is designed to build physical toughness.
这项训练计划旨在增强身体耐力。
材料韧性
Engineers measure the material toughness under high pressure.
工程师在高压下测量材料韧性。
表现出坚韧
She showed toughness in the face of criticism.
面对批评，她表现出了坚韧。
心理韧性对身体韧性，是四比一。
Many athletes live by the idea that mental toughness is to physical as four is to one.
许多运动员奉行这样的理念：心理韧性对身体韧性是四比一。
坚韧在于灵魂和精神，而不是肌肉。
When asked how he survived the brutal games, the player said, "Toughness is in the soul and spirit, not in muscles."
当被问及如何在残酷的比赛中幸存下来时，这位球员说：“坚韧在于灵魂和精神，而不是肌肉。”
Use toughness naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 tough（坚韧）和名词后缀 -ness 拼在一起：像牛皮糖一样难拉断，就是“韧性、坚韧”。
语域：mixed 常见场景：materials science、sports commentary、personal development toughness 在正式与非正式场合都较常见，语气中性；多用于描述坚韧、耐力或材料的韧性，实际语气随搭配（如 mental toughness、material toughness）而变化。
一般作不可数名词；复数形式罕见，仅指不同类型或方面时使用。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.