难题的英文怎么写

problem,difficulty,puzzle,conundrum

难题 difficult problempuzzleconundrumproblem

难题英文：difficult problem； a hard nut to crack； aporia； poser conundrum

难题的英文？呵呵！是这个difficult problem ！ 一道难题： A Difficult Problem；A Difficult Question 解决难题： Solution To Problems；put the axe in the helve；getover；solve the problem

难题[nán tí]difficult problem; a hard nut to crack; aporia; poser; conundrum 例句1.软件公司爱招募那些喜欢解决技术难题的人们。Software companies love hiring people that like solving hard technical problems.2.慢性病已经成为贫穷和中等收入国家的最大难题。Chronic disease is already the biggest problem for poor and middle-income countries.3.另一个理论难题是进入拍卖。Another theoretical conundrum is entry to the auction.4但这里存在一个难题。But there is a catch.5.难题是要帮助创建并支持一个正常运转的政府。The challenge is to help create and support a functioning government.

problem就行

trouble,problem,

puzzle是最标准的