v.(使)坚硬，坚固，加强，强化(法律、规定等)，使更坚强，使坚韧
toughen的过去分词和过去式

原形：toughen第三人称单数：toughens过去式：toughened过去分词：toughened现在分词：toughening

She had to toughen herself up for the job interview.
她必须让自己在面试中显得更坚强。
The skin on my hands has toughened from all the gardening.
我的手因为做园艺工作而变得粗糙。
The military training is designed to toughen recruits physically and mentally.
军事训练旨在使新兵在身体和精神上变得坚韧。
After years of practice, he's toughened his playing technique.
经过多年的练习，他的演奏技巧已经磨练得更加娴熟。
The economic crisis has forced companies to toughen their cost-cutting measures.
经济危机迫使公司加强削减成本的措施。
The coach told the team they needed to toughen their defense in the next game.
教练告诉队员下场比赛他们需要加强防守。
Living alone in a big city can be tough, but it also helps you toughen.
独自在大城市生活可能很艰难，但也能让你变得更加独立。
The harsh winter weather had toughened the wood, making it more durable.
严冬的天气使木头变得更坚硬，更耐用。
She had to toughen her resolve after facing several setbacks in her project.
在项目中遭遇几次挫折后，她不得不坚定自己的决心。
The new policy aims to toughen penalties for environmental pollution.
新政策旨在加大对环境污染的处罚力度。