名词中文翻译
中文翻译：难题
同义词：
['hard problem', 'tricky question']
例句：
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1.He's always had a tough nut to crack in his job.
他在工作上总是遇到棘手的难题。
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2. The company is facing a tough nut to crack in the market competition.
该公司在市场竞争中面临着棘手的难题。
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3.The team needs to find a way to solve this tough nut before the deadline.
团队需要在截止日期前找到解决这个棘手问题的方法。