全都是难题的英语

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.

The whole difficult math problem或者All the difficult math problem

problem就行

difficult problem

All the math problem

all the Maths problems(or questions)

problem,difficulty,puzzle,conundrum

conundrumproblempuzzle