n.坚定勇敢的人，无畏的人，艰难的选择，难题

原形：toughie复数：toughies

The final exam was a real toughie, with questions that even the top students struggled to answer.
最终的考试真是个难题，连最优秀的学生都努力回答那些问题。
He's known for being a toughie on the basketball court, never backing down from a challenge.
他在篮球场上以坚韧不拔著称，从不回避挑战。
Solving this crossword puzzle is a toughie; it's taking me forever to figure out the clues.
解这个填字游戏真难，我花了好长时间才弄懂这些线索。
The new project at work is quite the toughie – it requires a lot of research and innovation.
工作中的新项目是个棘手的问题——它需要大量的研究和创新。
She faced a toughie when deciding between two excellent job offers, each with its unique benefits.
在两个都很优秀的职位之间做选择时，她遇到了难题，每个职位都有其独特的优点。
The mountain climb proved to be a toughie, with steep inclines and unpredictable weather.
这次登山证明是相当艰难的，有着陡峭的斜坡和不可预测的天气。
This math problem is a real toughie; I might have to consult a tutor to get through it.
这道数学题真是难解，我可能得找家教帮忙解答。
Preparing for the marathon turned out to be a physical and mental toughie, requiring immense discipline.
准备马拉松比赛结果是身心俱疲的挑战，需要极大的自律。
Negotiating with the stubborn client was a diplomatic toughie, but we managed to find common ground.
与固执的客户谈判是个外交上的难题，但我们设法找到了共同点。
The chef's signature dish is a cooking toughie, with many intricate steps and rare ingredients.
这位厨师的招牌菜是一道烹饪难题，包含了许多复杂的步骤和稀有的食材。