The problem of hunger worldwide is a hard nut to crack. I'm afraid that scientists need to put in more efforts.
全球性的饥饿问题是个棘手的问题，恐怕科学家们需要付出更多的努力。
Building such a bridge over the bay was a hard nut to crack but the local government made it within two years.
在海湾上建造这样一座桥是一件困难的事情，但当地政府在两年内完成了。
My manager is a hard nut to crack. He always shouts at me about what I have done.
经理是个很难对付的人，他总是对我做的事大吼大叫。
Other great teams can comprise smooth negotiator and hard nut (Mr Nice and Mr Nasty) or a brilliant creative brain matched with a first-class commercial mind.
处事圆滑的人与刺儿头能组成好搭档（一个唱红脸，一个唱白脸），创造性人才与一流商业头脑也是良配。
The two-piece Hard Lock Nut is easy to install, requiring only the use of a wrench.
双件套强力锁紧螺母安装简便，只需要一个扳手就行。
The question of world hunger is a very hard nut to crack . I doubt if we'll find the answer to it in my lifetime.
世界性的饥饿问题是个极其难以解决的问题，我恐怕人们在我这一辈子都找不出解决的办法。
Benjamin: The boss is a hard nut to crack. He always shouts at me for trivial things.
本杰明：老板是个狠角色。他经常因为一点小事儿对我大吼大叫。
ABSTRACT The uncertainty in Supply Chain Management is a hard nut to be cracked that can not be obviated for companies.
供应链中的不确定性是企业和组织在管理和决策中不可回避却又十分棘手的问题。
How look after both sides, to each women, is all life together eternal hard nut to crack.
怎么样兼顾，对每一个女人来说，都是人生一道永恒的难题。
Small hard-shelled nut of north american hickory trees especially the shagbark hickories.
北美胡桃树尤其是山胡桃树的小的坚壳的果子。
The rich brocade met each time what hard nut to crack or sad affair, the brocade lotuses all cry stiller than rich brocade badly.
每次锦绣遇到了什么难题或是伤心事，锦莲都哭得比锦绣还厉害。
Give examples to say, if you want to have a chat boxing match or mathematics hard nut to crack with me, that just like in play piano the cow.
举例来说，如果你想和我聊聊拳击比赛或是数学难题，那无异于对牛弹琴。
The rich brocade met each period what hard nut to crack alternatively sad affair, the brocade lotuses all cry stiller than rich brocade badly.
每次锦绣遇到了什么难题或是伤心事，锦莲都哭得比锦绣还厉害。
The project of a bank office building in a special urban environment provides a hard nut to crack but also a chance to challenge a new form.
一幢在特定都市环境中的银行大楼设计，给设计者提出了苛刻的设计条件，同时也提供了创造新形式的机遇。
A: I don't understand Mr. Chen. He never smiles or laughs. B: I know! He's a hard nut to crack.
熏a：我真不理解陈先生。他从来不笑。B：我知道。他是个难以了解的人。
Shaping of double curved face lamella has been hard nut to crack in manufacture trial work.
在汽车车身试制领域，双曲面薄板零件的成形一直是试制工作的难题。
In English skill training for listening, speaking, reading and writing, listening takes an important position, yet it is also a hard nut to crack in English language learning.
在英语“听、说、读、写”技能训练中，听占有重要的地位，但这也是在英语学习中不易突破的一个难关。
I never know Bill very well. He was not very communicative and always seemed to me a hard nut to crack.
我从来就不太了解比尔，他不太爱说话，我总觉得他这个人很难对付。
The project of an industrial center for teaching located on a special site, provides us a hard nut to crack but also a chance to challenge a new height.
一座选址于特殊地形的教育工业中心，给建筑师出了一道难题，同时也提供了挑战新高度的机会。
Negative ambiguity, which is a hard nut to crack in language teaching and learning, has long been interested by language researchers.
否定歧义句是历来众多研究者所关注的一个问题，也是英语学习和教育中常遇到的一个棘手的问题。
How to evaluate the value of the software product is a hard nut to crack for software product designer and user.
如何评价软件产品的价值是困扰软件开发商和用户的一个难题。
As we all know, Our boss is a hard nut to crack, every time we want to ask for a leave, he simply says no, whatever reason you might have.
众所周知，我们的老板是个难缠的人。我们每次想请假，他都说不行，不管你有什么理由。
How safety, develop efficiently the petroleum resources is a hard nut to crack to put in the petroleum industry in front.
如何安全、高效地开发石油资源是摆在石油工业面前的一道难题。
Hard shelled nut of North American hickory trees especially the shagbark hickories.
北美胡桃尤其是山胡桃的的坚壳的果子。
When smelting and aluminum alloy that the founding is mutually related, a hard nut to crack that metallurgy technology is first of all encounter is adjust clean degree the rigorous demand.
熔炼和铸造相关的铝合金时，冶金工艺首先遇到的难题是对纯净度的严格要求。
Although very familiar with, but what is a hard nut to crack, I looked up and saw the clouds look thin.
虽然很熟悉，但还是说不清那是什么、我抬起头看了看那薄薄的云层。
While how to make oral English lessons effective and how to improve the student's oral communication competence has always been a hard nut to crack in the teaching of English.
如何上好口语课，如何培养学生的口头交际能力历来是英语教学上的难题。
While how to make oral English lessons effective and how to improve the student's oral communication competence has always been a hard nut to crack in the teaching of English.
如何上好口语课，如何培养学生的口头交际能力历来是英语教学上的难题。
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